Use This Trick to Boost Exercise Motivation



Are you been struggling to get your workouts in? 

Do you belong to a gym and find that you're not going?

Do you have exercise equipment sitting in your basement collecting dust because you find that you just can’t get yourself down there?

If you answered, “yes” to any of these questions you are not alone. Many people struggle with finding the motivation to exercise.

The problem here is that you have head trash going on. Head trash is that voice inside your head coming up with a million excuses that inhibit you from carving out a bit of time to take care of yourself.

Head trash will tell you that you’re too tired, even though a workout would give you a boost of energy.

Head trash will tell you that you’re too busy, even though you just spent a half hour on Facebook.

Head trash is barking at you to take care of others, even thought you know your health is important for you well being.

Head trash is a real conflict that can get in the way of our health and fitness goals. We start an exercise program with the intentions of a long-term commitment. But after the initial excitement wears off, we find our workouts occurring less frequently. Head trash begins to take over and soon we find ourselves not exercising at all.

Here is my secret for winning the battle over the head trash that keeps getting in way of your workouts. Tell yourself that you are only going to exercise for 10 minutes and evaluate if you want to continue. If you're truly too tired you can stop after 10 minutes. If you're truly too busy you can stop and move onto a task that needs your attention.

Making this deal with your mind that you are only going to exercise for 10 minutes seems reasonable. The head trash will become quite because your mind is convinced it has an out within 10 minutes.

I've used this 10-minute trick myself. I grind through the first few minutes, but then the magic happens. Once you hit the 10-minute mark your body takes over. Exercise feels amazing and your body is energized and enjoying the movement. You have tricked your mind to get over the hurdle of starting and now you’re in the exercise groove.

Try the 10-minute trick next time your head trash is getting in the way of your workout. You'll be amazed how your workout consistency improves.

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Wheat and the hunger factor

Wheat and the hunger factor

Low carbohydrate diets are becoming increasingly popular. In my experience, they also work exceptionally well.

However, I have observed a specific aspect of low-carb diets that deserves special attention: When wheat products in particular are eliminated, hunger plummets enormously.

It seems peculiar to wheat. Other high-glycemic index carbohydrates like a baked potato or white rice, for instance, don't seem to have the capacity to trigger appetite like a handful of pretzels or crackers can. There are exceptions: processed sweet drinks that contain high-fructose corn syrup can stimulate appetite, as do foods made with processed corn and corn starch.



However, wheat has grown to occupy an enormous part of diet, partly because of the "high-fiber" trickery that causes us to believe that wheat is healthy, but also, I'm convinced, because of wheat's hunger factor.


A reader of the The Heart Scan Blog recently made this comment:

I discovered this blog and Dr. Davis' TYP program at the beginning of September. I have relatively successfully cut carbs and grains from my diet thus far.

Because I've got some weight to lose, I have tried to keep the carb count low and I've lost 15 pounds since then.

I have also been very surprised at the significant reduction in my appetite. I've read about the experience of others with regard to appetite reduction and couldn't really imagine that it could happen for me too. But it has.

A few weeks ago, I attended a party catered by one of my favorite Italian restaurants and got myself offtrack for two days. Then it took me a couple of days to get back on track because my appetite returned.

Check out Jimmy Moore's website for lots of ideas about variations of foods to try. The latest thing I picked up from Jimmy is the good old-fashioned hard boiled egg. Two or three eggs with some spicy hot sauce for breakfast and a handful of almonds mid-morning plus a couple glasses of water and I'm good for the morning no problem.

I find myself thinking about lunch not because I'm really hungry but out of habit.

The cool thing too now is that the more I do this, the more I'm just not tempted much to do anything but this diet.



I, too, have personally experienced this effect. I also was skeptical. It made no sense. How can whole grain bread increase appetite? I don't know what it is about wheat products that make them especially powerful triggers of appetite. I think that it probably goes beyond glycemic index, perhaps some other component besides taste.

But if you want to seize control over appetite, elimination--not reduction--but elimination of wheat, as well as other processed carbohydrates, can really change the way you approach food. (Interestingly, The Wheat Foods Council estimates that the average American eats 144 lbs of wheat flour per year; they argue that it should be increased 210 lbs per year!)

Eliminating wheat products is also an effective tool in the Track Your Plaque program for raising HDL, reducing triglycerides, reducing small LDL, and reducing both blood sugar and blood pressure. And it can be among the most effective ways to control appetite, since eliminating wheat also eliminates its hunger factor.

Foods to consider to take up the calorie slack when eliminating wheat: cheese (fermented, of course, for vitamin K2 content); eggs, as our reader pointed out; other lean proteins like lean red meats, fish, chicken, turkey; more liberal use of healthy oils like olive and flaxseed; plenty of raw nuts and seeds; soy milk and tofu. Obviously, the center of your diet should remain vegetables.

Comments (20) -

  • Windminstrel

    10/28/2007 12:56:00 AM |

    Doc, what's your thoughts about oats as a wheat supplement? From what I've read, oats don't have the insulin effect of wheat, and have a positive effect on heart health.

  • Dr. Davis

    10/28/2007 2:25:00 AM |

    I think you mean as a wheat replacement? Yes, it is indeed a great replacement, along with flaxseed. Both exert effects on reducing both LDL and small LDL, opposite that of wheat.

  • Nancy M.

    10/28/2007 5:19:00 AM |

    I think it is a pretty easy explanation, wheat contains starches that cause a release of insulin.  Insulin is a powerful hormone that makes you hungry.  Gary Taubes book cites studies where insulin was injected directly into mice and guess what?  The mice eat like pigs.  Then the dropping blood sugar makes you hungry again.  

    Ever notice how you get hungrier when you start eating?  That's the first release of insulin and it whets the appetite.  The next release of insulin is slower and bigger (if you're eating lots of carbs).

    One of the nicest parts of a low carb diet is you get rid of all these cravings and crazy hunger because insulin is released much more normally.

  • jpatti

    10/28/2007 12:12:00 PM |

    Barley is a darned good grain also.  More antioxidants than blueberries!

  • Dr. Davis

    10/28/2007 12:48:00 PM |

    Yes, I agree.

  • dotslady

    10/28/2007 1:30:00 PM |

    This is absolutely true for me.  I was a victim of the '80s lowfat diet craze - doc told me I was obese, gave me the Standard American Diet and said to watch my fat (I'm not a big meat eater, didn't like mayo ... couldn't figure out where my fat was coming from!  maybe the fries - I will admit I liked fries).  I looked to the USDA food pyramid and to increase my fiber for the constipation I was experiencing.  Bread with 3 grams of fiber wasn't good enough; I turned to Kashi cereals for 11 years.  My constipation turned to steattorrhea and a celiac disease diagnosis!  *No gut pains!*  My PCP sent me to the  gastroenterologist for a colonscopy because my ferritin was a 5 (20 is low range).  Good thing I googled around and asked him to do an endoscopy or I'd be a zombie by now.

    My symptoms were depression & anxiety, eczema, GERD, hypothyroidism, mild dizziness, tripping, Alzheimer's-like memory problems, insomnia, heart palpitations, fibromyalgia, worsening eyesight, mild cardiomyopathy, to name a few.

    After six months gluten-free, I asked my gastroenterologist about feeling full early ... he said he didn't know what I was talking about!  *shrug*  

    But *I* knew -- it was the gluten/starches!  My satiety level has totally changed, and for the first time in my life I feel NORMAL!  

    Most of the above symptoms have resolved themselves, except the heart palpitations... Any suggestions?  (Doc seems to only look at thyroid:  Synthroid just reduced again to 100mcg from 175 mcg last year, but I’m still having them, esp w/low bp 96/59)   (I'm losing weight eating no white foods.)

    Just heard the tail end of a Gary Taubes interview on XM radio and he mentioned something about low bp and heart ... hmmm.

  • Anonymous

    10/28/2007 3:29:00 PM |

    My life changed when I cut not only all wheat, but all grains from my diet.

    For the first time in my life, I was no longer hungry -no hunger pangs between meals; no overwhelming desire to snack.  Now I eat at mealtimes without even thinking about food in between.

    I've dropped 70 pounds, effortlessly, come off high blood pressure meds and control my blood sugar without medication.

    I don't know whether it was just the elimination of grain, especially wheat, or whether it was a combination of grain elimnation along with a number of other changes, but I do know that mere reduction of grain consumption still left me hungry.  It wasn't until I elimnated it that the overwhelming redution in appetite kicked in.

    As a former wheat-addicted vegetarian, who thought she was eating healthily according to all the expert advice out there at the time, I can only shake my head at how mistaken I was.

  • Nyn

    10/28/2007 6:16:00 PM |

    I've been reading your blog for some time, and eliminating wheat sounds like a great thing...but what do you eat? I'm hypothyroid and have been told to avoid soy products because it interferes with the absorption of thyroid meds. I'm lactose intolerant, so I'm avoiding dairy as much as possible (I miss cheese!), and I've recently been given a diagnosis of IBS. My MD said to avoid raw vegetables and fruits. That leaves eggs, lunch meant, and almonds for protein. Cooked vegetables are very difficult to include in my daily diet when the majority of my meals must be transported. I am at a loss as to where to even begin...and I already eat too much rice because that's one of the things I can consume without discomfort. Needless to say, I am gaining weight... What does someone in my predicament eat to control hunger?

  • Cindy Moore

    10/28/2007 6:44:00 PM |

    While I have no doubt some are sensitive to wheat, personally I think it's the total carbs in any given meal that regulates appetite. For me, an piece of fruit increases my appetite just as much, if not more than a piece of bread!

  • Dr. Davis

    10/28/2007 8:28:00 PM |

    Wow. Tough predicament.

    I won't pretend to have a full solution but some thoughts:

    1) Many lactose intolerant people can handle yogurt and cottage cheese, often some cheese.

    2) You've just got to bit the bullet and cook your vegetables. If vegetables are the number one most important food in your diet, you simply need to find a solution.

    3) Nuts-lots! Seeds, too, like sunflower and pumpkin.

    4) Low-glycemic index grains like oats, barley, and flaxseed (ground). Perhaps Ezekiel bread might be a compromise worth trying.

    5) More oils.

    6) Rice should be wild.

    7) Squashes

    8) Avocados-transportable, too.

    9) Do you and your doctor feel that ALL raw vegetables trigger IBS symptoms? In my experience, it's just selected vegetables.

    No doubt about it. You've got it tougher than most.

  • Dr. Davis

    10/28/2007 9:18:00 PM |

    dotslady--

    Re: palpitations. Have you addressed the omega-3 and magnesium issues? There may also be real issues to consider by your doctor, e.g., your potassium level and blood pressure control. Underappreciated high blood pressure issues can trigger palpitations. In my experience, this is very common.

  • Nancy M.

    10/29/2007 6:35:00 PM |

    I'm betting the doctor told nyn to cook her veggies, and avoid soy, because many are goitrogenic (work to make thyroid hormone unusuable).  I think any of the veggies in the brassica family are like broccoli, brussel sprouts.  I know turnips are (I love raw turnips), and soy is too.

    If you've got refrigeration and a microwave handy, bringing your meals is pretty easy.  I used to bring all kinds of things to work that would probably work for you.  One of my favorites is a big salad with meat, nuts and a simple olive oil and rice vinegar dressing.  Cooking veggies shouldn't be a problem reheating them in the microwave.  I tend to use lots of frozen veggies and just microwave them and drizzle butter or EVOO on them.

    I follow the Paleo diet pretty closely.  It eliminates all grains, legumes, and dairy products.  My autoimmune diseases are much, much better now too.

  • Nyn

    10/29/2007 6:44:00 PM |

    nancy m & all, thank you for the suggestions. I will look into more cooked veggies. I hate cooking, and am very unhappy with this new way of eating and lifestyle. I am trying to plan ahead, and this site has really helped me. I'm trying to get past the denial stage and move on with things. I wish there was a list of things to eat, like a meal plan, somewhere. I am still looking. Great advice here.

  • G

    11/2/2007 5:33:00 AM |

    hi nyn -- i've never heard that you have to avoid certain foods when you are taking Synthroid -- you do need to avoid taking calcium and other minerals being co-adminstered at the same time as the Synthroid. Calcium (or magnesium or other cation minerals bind Synthroid and inactive the drug). A recent study showed that taking thyroid replacement medications at bedtime on an empty stomach has the most optimal effects and absorption. so i tell patients to take Levothroid or synthroid when they brush their teeth at night (assuming they brush daily) and at least 1-2 hrs AFTER any dairy, milk, ice cream, multivitamins (esp containing minerals), TUMS, antacids, etc.  I don't see a food interaction otherwise with thyroid medications.
    I hope your doc is aware that the new AACE Hypothyroid guidelines is to shoot for TSH between 0.2 and 3.0.  Many labs still have 5.5 as the 'normal' upper limit.  This is no longer correct.  So, if your TSH is greater than 3.0, you are likely still suffering from hypothryoid signs and symptoms. getting corrected (meaning, more medication) will get the TSH down to optimal goal < 3.0 and will prevent complications related to hypothyroidism (ie, high BP, insulin resistance, dyslipidemia, PALPITATIONS, feeling plain crappy, wt gain and even osteoporosis!)  i hope that helps!  IBS is tough -- my husband has it too -- developed when he commuted 1h each way to see me during pharmacy school!  aint stress bad bad bad!!!  once you get IBS you never get rid of it... good news, it can be improved...
    sugar-free metamucil (or other fiber source -- take 1-2 scoops with a VERY LARGE glass of water daily) is the cornerstone treatment (it works for most people I know) along with stress REDUCTION! go to a day spa weekly and get yourself a therapeutic massage (*doctor's orders!*  *ha haaa* no kidding!  good luck!!

    (of course i hope you followed DR. D's advice on getting checked out for your baseline vitamin 25(OH)D test?  Hashimoto's hypothyroidism is autoimmune and therefore can be associated with hypovitaminosis D, ie, inadequate Vitamin D stores in the body.  get your sunlight/ supplements if you need it!! I'm deficient myself... and in denial...  but i'm so grateful I came across this blog to even become aware of this epidemic)

  • dotslady

    11/4/2007 3:32:00 PM |

    Dr. D - Re: magnesium and potassium, last check they were in range.  I wanted to get baselines before trying supplements, so I just got my vit D checked also (not sure he did correct test, but D3 was 20, D2 was 10 = 30 and he said it was fine!).  I haven't been taking omega-3s, so will start and let you know how it goes!  Thanks for your help.  I appreciate everything you write!

    nyn - another thought re: IBS.  Could be a symptom of celiac disease at worst, gluten sensitivities at least.  Maybe giving up gluten grains will help repair your villi/gut(if indeed that's a problem) and allow fresh veggies, etc. at a later time once healed.  Smile Have you done an elimination diet and rotated foods before?

    Healing time varies depending on severity of villi damage.  Consider researching celiac symptoms & websites, maybe read about the Specific Carbohydrate Diet by Elaine Gottschall(google)?  Read:  Gluten-Free Living for Dummies by Danna Korn before changing your diet.  Consider if you want a celiac diagnosis on your health or life insurance records ...

  • G

    11/6/2007 3:31:00 AM |

    I'm an incurable yoga addict now(nothing special... just 'gym' *translation... 'FREE'* yoga!) but i've done some research and the benefits are huge. it's been around forever > hundreds of years and there must be a reason...

    benefits:
    1. reduction in stress/cortisol and improved relaxation (cortisol is 'toxic' injuring brain cells, increasing visceral fat in the abdom cavity which clogs arteries to the heart, liver and other organs, and increases glucose and therefore inflammation/free radicals)
    2. many poses  'massage' internal endocrine glands including the adrenals, parathyroid and THYROID tissue (which help remove stagnant toxins and improve internal circulation)
    3. has helped me to make the magnficient realization that all things are connected in life (whether we like it or not, ie friends-foes, black-white, ying-yang, et cetera) -- just like how all the organs and limbs and the mind are uniquely linked in our own bodies. when one thing is injured/hurt/malignant, it goes and affects e-v-e-r-y-t-h-i-n-g else. For instance I had a recent shoulder injury, and now if I don't do the appropriate exercises to maintain its strength, I unfortunately get referred pain and tension to my neck and back.
    4. all the tendons, ligaments and small muscles in the back need to be exercised and kept strong in order to support the back. yoga helps to accomplish this otherwise the back cannot do what it needs to do effortlessly and painlessly.  MUCH LIKE THE AMAZING COMMUNITY HERE -- we all support each other and keep our bodies, minds, and spirit STRONG. I'm so grateful to Dr. D for all his advice, accessibilty and ever endeavoring persistence to improve our greater health. May you ALWAYS be blessed. (and that your house doesn't get TP'd when more truths are exposed). Keep up the excellent work! THANK YOU, G

  • Dr. Davis

    11/6/2007 12:10:00 PM |

    Thanks for the kind comments, G.

    I agree with you about the yoga. Having tried it over the years and doing it on occasion with my wife, I believe that you are absolutely right.

    Bring on the TP!

  • Anonymous

    11/12/2009 3:47:54 AM |

    heartscanblog.blogspot.com is very informative. The article is very professionally written. I enjoy reading heartscanblog.blogspot.com every day.

  • Anonymous

    8/10/2010 5:21:38 AM |

    I have been wheat free for 2 and 1/2 months, and have to agree 110% on the hunger factor.  Thanks for getting the word out there.  It has made me wonder if companies know this and use it in their favor? Also if this is one of the big triggers in the US weight problem?  And how sad if people don't know this, that they think they simply have no will, when it is really the wheat.  We have also noticed that it is difficult to find cat or dog food (dry) without wheat in it!   Our outdoor cats are constantly hungry, even though it seems like they have more than enough food, I wish we could find a wheat free cat food, and see if they eat less.  Thanks again for the article.

  • buy jeans

    11/3/2010 2:23:48 PM |

    But if you want to seize control over appetite, elimination--not reduction--but elimination of wheat, as well as other processed carbohydrates, can really change the way you approach food. (Interestingly, The Wheat Foods Council estimates that the average American eats 144 lbs of wheat flour per year; they argue that it should be increased 210 lbs per year!)

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Large LDL counts, too

Large LDL counts, too

Chad is a 43-year old father of five kids.

Earlier this year, he developed chest pain that got worse and worse. He ended up with a total of five stents in all three coronary arteries. After a devastating experience with Lipitor that resulted from a ruptured tendon, he came to me for an option.

Chad's lipoproteins:
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Nuts as functional foods

Nuts as functional foods

Food manufacturers gave nuts a bad name when they started adding evil ingredients to them. "Party mix", "honey-roasted", mixed nuts, etc., are made with added hydrogenated oils, salt, sugar, excessive quantities of raisins, or other added ingredients that turned a healthy food--nuts--into something that made us fat and hypertensive, raised LDL, dropped HDL, and raised blood pressure.

But nuts themselves are, for the most part, very healthy foods. The very best are nuts with a brown fiber coating like almonds, walnuts, and pecans. Nearly all nuts also come rich in monounsaturated oils similar to that in olive oil. Although calorie-dense, nuts tend to be very filling and slash your appetite for other foods. I have never seen anyone gain weight by adding raw nuts to their diet. In fact, I find adding raw nuts cuts craving for sweets.

Nuts are also among the most concentrated sources of magnesium, containing around 150 mg per 1/2 cup serving. As most Americans are at least marginally if not severely deficient in magnesium, this really helps. Magnesium deficiency is a prominent aspect of "metabolic syndrome" and resistance to insulin.




Some nuts have added benefits like the l-arginine content of almonds or the linolenic acid content of walnuts. However, I think the real health "punch" comes from the fiber and monounsaturate content.

Add 1/4-1/2 cup of raw almonds, walnuts, or pecans per day to your diet and what can you expect? The effects that I see every day that are relevant to plaque control/heart scan score-reducing efforts include:

--Reduction in LDL--usually a 20 mg/dl drop, sometimes more.

--Reduction in triglycerides, especially if nuts replace processed carbohydrate calories. This may be because the fiber and monounsaturate content of nuts reduces blood sugar and the effective glycemic index of any accompanying foods.

--Modest blood pressure reduction.

--Though somewhat inconsistent, partial suppression of the dreaded small LDL particle pattern. We struggle with turning off the small LDL pattern in some people, and raw nuts can provide a real advantage.

If that isn't enough, the fiber content also makes your bowels regular.

Unless there's some reason to avoid nuts (e.g., allergy), nuts should be a part of your heart scan score reducing program. Shop around, as prices can vary wildly. I've been paying $12.99 for a 3 lb bag of raw almonds from Sam's Club, though I've seen almonds elsewhere for up to $12.99 per pound.

For additional commentary, go to one of my favorite Blogs, http://fanaticcook.blogspot.com. The Fanatic Cook's recent post, The Season for Walnuts , provides additional discussion on walnuts and the recent study showing how they improve "endothelial function". The nutritionist behind this Blog has fabulous insights into food, including the concept of "functional foods", i.e., using foods as a treatment tool. She is also unfailingly entertaining.
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How low should blood sugar be?

How low should blood sugar be?

What should your blood sugar (glucose) be after eating?

Take a look at the data from the Whitehall study reported in 2006. The Whitehall Study stands apart from other studies in that it was very large (over 18,000 participants) who were observed for an unusually long time (33 years). All participants were administered a 50 gram glucose "challenge" at the start with glucose levels checked after the glucose challenge.

Here's what they found:




From Brunner et al 2006.
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Are you a tree?

Are you a tree?

I assume you answered no. Then why would you consider taking the plant form of vitamin D (ergocalciferol)? That's the prescription form of vitamin D, often dispensed as 50,000 unit tablets.

There's nothing wrong with plants. Some of my favorite foods are plants, full of nutritional value.

Then why shouldn't vitamin D2 from plants be every bit as good as the human form of vitamin D?

I believe the issue boils down to taking hormones from non-human sources. (Remember: Vitamin D is a hormone, a very powerful one at that.) Plants can be wonderful sources of flavonoids, fibers, protein, fats, vitamins, minerals, and other healthy components. But hormones?

There are other examples of non-human hormones being given to humans with undesirable or unpredictable effects:

--Xenoestrogens, phytoestrogens, and non-human mammalian estrogens--While non-human estrogens may partially mimic human estrogens, they can also block estrogen effects, or exert altogether novel effects. Non-human mammalian estrogens like Premarin can exert very peculiar (side-)effects, despite their role as prescription estrogen supplementation in humans.

--Progestins--The synthetic versions of human progesterone, like their non-human estrogen counterparts, exert weird effects that are a world apart from real progesterone.

--Sterols--Similar in structure to human cholesterol (while not a hormone, a building block for hormones), sterols have been used to reduce intestinal cholesterol absorption. However, if sterols are absorbed into the blood, they can enormously accelerate growth of atherosclerotic plaque.

--Anabolic steroids--These modifications of the testosterone molecule build muscle, but also cause liver cancer, kidney failure, violent behavior, suicide and homicidal behavior. That's not normal.

Outside of a pharmacologic effect (e.g., prednisone in place of human cortisol), there is no reason to take a non-human hormone in place of a human hormone. For that same reason, there is NO reason to take plant vitamin D2 (prescription or over-the-counter) in place of human vitamin D3.

If the non-human hormone is identical to the human form, then there is no difficulty. The best example of this are thyroid hormones from pigs. That's what Armour Thyroid is, a thyroid hormone replacement that works wonderfully well.

You will notice that virtually all of the examples of non-human hormones substituted for human hormones share one common motivation: profit. Synthetic or modified versions are more readily patent-protectable, unlike their natural counterparts which are not.

Vitamin D2 is an anemic facsimile of the real human hormone, vitamin D3 (cholecalciferol). Stay away from it.

Comments (6) -

  • Anonymous

    3/5/2009 5:00:00 AM |

    Dr Davis,

    I am not a doctor by profession but an engineer. I am really frustrated in trying to get to the bottom of things in the medical field. It is quite vexing when I cant decide if something is a safe practice or not. Would you please help me (and perhaps many other) understand how I can take oil-based Vitamin D without worrying about Vitamin A levels as well? Should I worry about taking Cod Liver Oil based preparations with questionable manufacturing practices which seems to include filtering to remove the Vitamin D and then adding synthetic form at the end?

    If you could get into some details, it would be very helpful.

    Regards,

  • StephenB

    3/5/2009 3:41:00 PM |

    Anonymous, you could take fish oil instead of cod liver oil for the omega-3 and take vitamin D as D3 in softgel form.

    Vitamin A can be supplemented by providing its precursors like alpha-carotene, astaxanthin, beta-carotene, cryptoxanthin, lutein, lycopene, and zeaxanthin. Supplying precursors will let your body decide how much vitamin A to make out of it. Supplying preformed retinol bypasses the body's control systems.

    Cannell et al recommended an D:A ratio of about 6:1 in IU terms ("Cod Liver Oil, Vitamin A Toxicity, Frequent Respiratory Infections, and the Vitamin D Deficiency Epidemic", a commentary piece in Annals of Otology, Rhinology & Laryngology 117(11):864-870, on page 866, third paragraph).

    Maybe it's best to avoid retinol and make sure you get enough A precursors.

    StephenB

  • Jenny

    3/5/2009 5:29:00 PM |

    The yam based forms of Estrogen have a much better safety profile than the others on the market. In fact,the worst reaction I've ever had to a hormone was to a supposedly "bioidentical" estrogens from a compounding pharmacy.

    The problem with anabolic steroids apply to bioidentical testosterone supplements too. Too much testosterone is bad for your body.

  • Grandma S.

    3/5/2009 6:13:00 PM |

    Does this mean that Benecol is not good to use in lowering cholesterol?

  • Anonymous

    3/6/2009 3:15:00 AM |

    The bit that I find most disturbing in this post is the bit on sterols. Many authorities advise us to use phytosterols or stanols to lower cholesterol. I did find one article on PubMed a while ago (but can't refind it now) suggesting that, since the structure of phytosterols is similar to cholesterol, using them to replace cholesterol shouldn't just be assumed to be a safe thing to do. Do you have any more data or links on this issue?

  • mike V

    3/17/2009 3:58:00 PM |

    I came across this post by Dr Michael Holick whom I respect, and naturally all readers here respect your findings from the front line in Milwaukee. There appear to be some differences in interpretation.
    *********
    Vitamin D2 vs. D3
    Vitamindhealth.org
    Posted by mfholick on November 27, 2008 under Vitamin D |  
    **********
    Vitamin D2 and Vitamin D3 Are They Equally Potent?

    During the past several years, there have been two studies Trang et al, (Am J Clin Nutr 68:854-858, 1998); and Armas et al, (J Clin Endocrinol Metab 89:5387-91; 2004) that have raised questions about whether vitamin D2, which is found in some supplements, used in some fortified foods and is the pharmaceutical form of vitamin D that doctors prescribe for their patients, is as effective as vitamin D3 in maintaining a person’s vitamin D status, i.e., blood level of 25-hydroxyvitamin D.  Trang et al 1998 gave healthy adults 4,000 IU of vitamin D2 or 4,000 IU of vitamin D3 in alcohol for two weeks.   A comparison of the blood levels of 25-hydroxyvitamin D after two weeks revealed that there was approximately a 50% difference in the group receiving vitamin D3 (being approximately 50% higher) than the vitamin D2 group.  This implied that vitamin D3 was more effective than vitamin D2 in maintaining circulating blood levels of 25-hydroxyvitamin D.  Armas et al 2004 gave a single 50,000 IU dose of either vitamin D2 or 50,000 IU dose of vitamin D3 to healthy volunteers during the summer and observed that the group who received vitamin D2 had a more rapid drop in their circulating blood levels of 25-hydroxyvitamin D.  They also observed that the group that received vitamin D2 had a more rapid drop in their blood levels of 25-hydroxyvitamin D3 compared to the placebo group suggesting that vitamin D2 was not only less effective than vitamin D3 in maintaining circulating levels of 25-hydroxyvitamin D, but also that vitamin D2 increased the destruction of vitamin D3.

    Based on these observations, physicians, health care professionals and patients have made an effort to find vitamin D supplements that contain vitamin D3.  However, in the United States, only vitamin D2 is available as a pharmaceutical preparation, and, thus, patients who are vitamin D deficient and treated by their physicians receive vitamin D2.  I treat vitamin D deficiency with 50,000 IU of vitamin D2 once a week for eight weeks.  To prevent vitamin D deficiency from recurring, I then put the patient on 50,000 IU of vitamin D2 every two weeks forever.  From my experience of over 100 patients on this regime for up to six years, their blood levels are sustained above 30 ng/ml which is considered to be the vitamin D sufficient range.  On average, the blood level was between 40-50 ng/ml.  Furthermore, an evaluation of their blood calcium, a measure of whether ingesting vitamin D2 at these levels, had caused any toxicity did not change.  Therefore, this regime was effective in maintaining my patients’ vitamin D status without causing any untoward toxicity.

    To determine whether vitamin D2 was as effective as vitamin D3 in maintaining circulating blood levels of 25-hydroxyvitamin D, a study was conducted whereby healthy adults received either 1,000 IU of vitamin D2 or 1,000 IU of vitamin D3 in a capsule once a day in the winter for 11 weeks.  In addition, one group received a placebo capsule and one group received a capsule that contained 500 IU of vitamin D2 and 500 IU of vitamin D3 daily for 11 weeks.  Blood levels of both 25-hydroxyvitamin D2 and 25-hydroxyvitamin D3 were determined by state of the art method using liquid chromatography tandem mass spectroscopy.  Holick et al, (Vitamin D2 is as effective as vitamin D3 in maintaining circulating concentrations of 25-hydroxyvitamin D, J Clin Endocrinol Metab  93:677-681, 2008;) reported that the blood levels of 25-hydroxvitamin D rose to the same degree in the healthy adults who took either 1,000 IU of vitamin D2 a day or 1,000 IU of vitamin D3 a day for 11 weeks.  The group that received vitamin D2 also had their blood level of 25-hydroxyvitamin D3 measured.  There was no significant drop in the blood level of 25-hydroxyvitamin D3.  To determine whether the mixture of vitamin D2 with vitamin D3 would alter the blood levels of 25-hydroxyvitamin D, the adults who received 500 units of vitamin D2 with 500 units of vitamin D3 also raised their total blood levels of 25-hydroxyvitamin D3 in an almost an identical manner as the adults who received 1,000 IU of vitamin D2 or 1,000 IU of vitamin D3 a day for 11 weeks.  The authors concluded that ingesting 1,000 IU of vitamin D2 or 1,000 IU of vitamin D3 a day during the winter (at a time when sun exposure had no influence on blood levels of 25-hydroxyvitamin D) that both vitamin D2 and vitamin D3 were equally effective in maintaining the blood levels of 25-hydroxyvitamin D.  Furthermore, vitamin D2 did not have a negative influence on serum levels of 25-hydroxyvitamin D3.  Adults who took 500 units of vitamin D2 with 500 units of vitamin D3 had similar increases in their blood levels of 25-hydroxyvitamin D suggesting that vitamin D2 taken with vitamin D3 does not have any negative influence on the metabolism of vitamin D3.  

    The authors reviewed in their Conclusion several studies that had previously reported that vitamin D2 was as biologically effective as vitamin D3 in both pregnant women and in healthy adults.  This study confirms these observations and adds to the body of scientific literature demonstrating that at least when healthy adults take 1,000 IU of vitamin D2, they can be assured that it is as effective as taking 1,000 IU of vitamin D3
    ************

    Although this a little academic, since I have been perfectly happy with D3 for years, a resolution would be iteresting.
    Any chance of an update, or a Holick interview here?
    MikeV

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Vitamin D--A coronary risk factor

Vitamin D--A coronary risk factor

Look up "coronary risk factors" in any text and you'll find high cholesterol, smoking, diabetes, and high blood pressure listed. You won't find deficiency of vitamin D listed.

Ask 99% of physicians if a deficiency of vitamin D is a coronary risk factor and you'll get rolling eyes and a sigh.

Yet, in the Track Your Plaque experience, vitamin D is emerging as a very important factor in coronary plaque development. We have observed that there are a substantial number of people whose lipids and lipoproteins are not abnormal enough to fully explain their heart scan score. In other words, there seems to be something else necessary to satisfactorily explain the magnitude of coronary plaque.

I believe that severe vitamin D deficiency is at least one of the most important factors. We've seen many people with blood levels of vitamin in the range of severe deficiency (<20 ng/ml of 25-OH-Vitamin D3) yet bland lipids and lipoproteins.

Correcting vitamin D blood levels to 50 ng/ml also seems to be among the required factors in stopping coronary plaque growth, or stopping your heart scan score from increasing.

Keep your eye on this extremely important and exciting issue. Sadly, it won't be propelled into the media like the conversation about cholesterol or high-tech procedures, since no company stands to profit from it. But you and I don't have to play that game.

Comments (1) -

  • Weight Loss Expert

    5/27/2006 4:07:00 PM |

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