Are you taking too much vitamin D?

frank shallenberger md

“Vitamin D is dangerous.” “You have to be very careful with vitamin D.” “Vitamin D can easily become toxic and lead to many problems.” “It is risky to take more than 1,000 units of vitamin D per day.” Have you ever heard statements like these? I have. Probably a month doesn’t go by before I find out that some doctor said as much when he found out I had prescribed a “dangerously high dose of vitamin D.” So imagine how happy I was to find a review article on the incredible safety of vitamin D in one of the most respected medical journals in the U.S.

In the May 2015 edition of the Mayo Clinic Proceedings, researchers reported on a study that looked at over 20,000 vitamin D blood tests done between 2002 and 2011. They found that the number of people testing with vitamin D levels over 50 ng/ml increased more than 25 times. No doubt this was because of the fact that vitamin D supplementation has been shown to be one of the most important things we can do for our health. And more and more doctors are prescribing it. But what about safety? If the levels of vitamin D increased so dramatically over that period of time, surely the number of toxicity cases went up as well? Not so fast, Pardner.

Out of more than 20,000 cases, they found only one case of toxicity. And that patient had a vitamin D blood level of 364 ng/ml! This is more than five times higher than the recommended optimum blood level of 70 ng/ml. The other concern that doctors have is the chance of harmful elevated calcium levels. This happened only in four patients. And when their vitamin D intake was reduced, the calcium levels quickly returned to normal. All those concerns of kidney stones, cardiovascular calcifications, and death did not occur in one person – even in the patient with the 364 ng/ml level. And this isn’t the only study verifying the incredible safety of vitamin D even in high doses. Another study reported just last year on more than 17,000 healthy adult volunteers who were taking doses of vitamin D up to 20,000 units a day. Not one of them had any toxicity.  

Michael L. Holick, MD is an endocrinologist and is probably the world’s leading expert on vitamin D supplementation. Here’s what he had to say about vitamin D in the same Mayo Clinic Journal issue.

“There is no credible scientific literature suggesting that vitamin D intake increases the risk for kidney stones. Similarly, data are weak regarding the association between vitamin D intake and cardiovascular calcifications. To the contrary, current evidence suggests that improvement in vitamin D status reduces the risk for hypertension, stroke, and myocardial infarction. The evidence is clear that vitamin D toxicity is one of the rarest medical conditions and is typically due to intentional or inadvertent intake of extremely high doses of vitamin D, usually in the range of more than 50,000-100,000 units a day for months to years.”

So there you have it. I hope this puts the vitamin D toxicity crisis in its proper place. It’s always amazing to me when a doctor who spends 80% of his life writing prescriptions for patent drugs with serious documented toxicity gets his dander up over a patient taking a vitamin. So if your doctor ever gets excited over your vitamin D intake, be sure to help him out and give him these references so he can sleep better.

In the meantime be sure to take enough vitamin D to get your blood levels between 50-70 ng/ml. This is the level that offers maximum protection. I usually recommend 5,000 IU daily of vitamin D to get to that level. And once you get to that level, check your blood calcium just to make sure that you aren’t that exceedingly rare person whose levels go up from taking the vitamin.

REF: Dudenkov DV, Yawn BP, et al. Changing Incidence of Serum 25-Hydroxyvitamin D Values Above 50 ng/mL: A 10-Year Population-Based Study. Mayo Clin Proc. 2015 May;90(5):577-86.
Holick MF.  Vitamin D Is Not as Toxic as Was Once Thought: A Historical and an Up-to-Date Perspective. Mayo Clin Proc. 2015 May;90(5):561-4.

Yours for better health,

By Dr. Frank Shallenberger, MD

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Cholesterol Levels Guidelines Must Be Ignored By Women

doctor nan kathryn fuchs phd

Pharmaceutical companies are at it again: telling us that statins are safe and that many more people should take them. I’ve talked about the dangers of statins, their side effects, and reasons not to take them for years.

Despite their dangers, conventional medicine recently came out with new guidelines that will likely double the number of people taking statins. These new guidelines suggest anyone with heart disease or diabetes should automatically take statins. And anyone with LDL over 190 or a high likelihood of having a heart attack in the next 10 years should also take statins. But these guidelines won’t prevent any more heart attacks, because no studies prove statins prevent heart attacks in women. (Statins might prevent second heart attacks in middle-age men who have suffered a first heart attack. They won’t help anyone else.)

Today I’d like to remind you of information that I shared with you several years ago. It shows you why you shouldn’t pay attention to the nonsense in today’s news suggesting that “cholesterol-busting drugs” are desirable. They aren’t desirable for anyone, but they’re especially dangerous for women. Here’s why…

First, studies have concluded that statins don’t work well on women. I’ve told you in the past that statins contribute to liver toxicity while robbing you of your heart’s essential nutrient Coenzyme Q10. This antioxidant is essential to your cells’ production of energy. Your heart and brain must have CoQ10, but statin use significantly lowers blood levels of this nutrient. When women take statins, the studies show that they are at a much higher risk for these side effects than men.

But there’s more. Statins also contribute to your risk of cataracts, particularly if you’re diabetic. We’re still seeing lots of prescriptions for statins to lower cholesterol to help avoid heart disease. But high cholesterol isn’t necessarily a risk for heart disease – and taking statins is definitely a risk for cataracts. And the fact that the new guidelines want every diabetic to take statins ensures we’ll see more cataracts in the near future.

That’s not all. According to a paper from the University of California San Diego’s Statin Study group, there are nearly 900 studies of statins’ adverse side effects. That’s right, 900! These side effects include muscle pain, fatigue, and weakness. Statins can also rob you of your memory and ability to think coherently. They can cause pain or weakness in your fingers and toes – a condition known as peripheral neuropathy.

So what can you do if you have high cholesterol? Obviously, don’t take statins. Instead, change your diet. In one study, patients who had high cholesterol and high CRP (a marker for inflammation) ate various diets. One group ate a diet that minimized consumption of saturated (animal) fats. Another group ate the same diet and took a statin. The final group ate a diet high in vegetables, soy, and almonds and did not take a statin. The third group fared the best. In fact, their results were almost as good as those who took the statin. The only significant difference was they avoided the dangerous side effects.

Don’t listen to the pharmaceutical companies. You don’t need a statin to lower your cholesterol. If your doctor does coerce you into taking statins, make sure you’re taking Ubiquinol CoQ10. It won’t protect you from all of the side effects of statins. But at least you can overcome this one major problem.

Your voice of reason in Women’s Health,

By Dr. Nan Kathryn Fuchs PhD

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