By: Terry Graedon November 19, 2018 32 Comments
    Study of Vitamin D Supplements Results in Disapp…

    Millions of Americans are low in vitamin D, but taking vitamin D supplements may not do any good. A study of vitamin D supplements recently published in The New England Journal of Medicine (online, No…

    By: Terry Graedon November 15, 2018 49 Comments
    Vitamin D Strikes Out Against Heart Attacks and …

    Millions of Americans are low in vitamin D. They are at higher risk for a range of health problems, from asthma to osteoporosis, hypertension, rheumatoid arthritis and cancer. These individuals may b…

    By: Terry Graedon October 18, 2018 23 Comments
    Show 1139: Will Supplements Keep Your Bones Stro…

    For years, people were urged to take calcium supplements to avoid losing bone density. This advice was aimed particularly at menopausal and postmenopausal women because they are especially susceptible…

    By: Terry Graedon October 15, 2018 6 Comments
    Will Vitamin D Boost Your Mood This Winter?

    Vitamin D, sometimes known as the sunshine vitamin, is renowned for its contribution to bone strength. It may also help ward off lung infections, particularly among people who are especially susceptib…

    By: Terry Graedon August 2, 2018 5 Comments
    How Are Vitamin D and Rheumatoid Arthritis Linke…

    Vitamin D (the sunshine vitamin) is essential for good health. Human beings can make this hormone when skin is exposed to sunlight. In addition, vitamin D is found in a few foods: oily fish (and espec…

    By: Terry Graedon July 18, 2018 9 Comments
    Do Vitamin D Pills Lower Your Chance of Cancer?

    Epidemiological studies have shown that people with low levels of vitamin D are more susceptible to various cancers. What can you do to reverse your risk? The answer is not clear.  We do not know if …

    By: Joe Graedon July 2, 2018 23 Comments
    Do You Know Your Vitamin B12 (Cobalamin) Levels?

    Most people do not think much about Vitamin B12, also known as cobalamin. It does not get the attention of vitamin D, vitamin K or vitamin C. And yet this water-soluble nutrient is crucial for every c…

    By: Terry Graedon June 18, 2018 3 Comments
    Will Vitamin D Pills Help You Avoid Cancer?

    New research strongly suggests that people with too little vitamin D in their systems are more likely to get colorectal cancer (McCullough et al, Journal of the National Cancer Institute, June 14, 201…

    By: Terry Graedon May 20, 2018 13 Comments
    Could Vitamin B12 Deficiency Make You Fall?

    Falls are a great fear as people get older and less steady on their feet. And no wonder: a fall can result in broken bones and greatly reduced mobility. More than a fourth of older adults who break a …

    By: Terry Graedon March 8, 2018 2 Comments
    Extra Summer Sunshine Makes for Milder Flu Seaso…

    Extra end-of-summer sunshine might mitigate the flu season that follows, according to a new study (National Bureau of Economic Research, Feb., 2018). Scientists found that when a state gets 10 percent…

    By: Terry Graedon February 5, 2018 8 Comments
    How Much Vitamin C Do You Need?

    Vitamin C, isolated and named more than 100 years ago, is crucial for good health. Even before it was discovered, vitamin C entered history. A lack of fresh fruits and vegetables on long sea voyages m…

    By: Terry Graedon October 30, 2017 3 Comments
    Which Drugs Mess with Vitamin B12?

    Keeping track of the nutritional consequences of medications can be tricky. Doctors don't always ask about possible problems; nor do pharmacists necessarily take these into account. But there are some…

    By: Terry Graedon October 9, 2017 8 Comments
    How to Raise Vitamin D with Sunshine and Cod Liv…

    Vitamin D is known as the sunshine vitamin because we make it when ultraviolet light from the sun strikes the skin. This compound behaves like a hormone. Numerous physiological functions depend heavil…

    By: Terry Graedon August 14, 2017 4 Comments
    Is There a Cure for Concave Fingernails?

    Have you ever looked at your fingernails and wondered why they look the way they do, with ridges or streaks or splits? Often, there is not a specific answer to such a question. There are, however, a f…

    By: Terry Graedon August 7, 2017 16 Comments
    Is Your Confusion Due to a Vitamin Deficiency?

    As we grow older, our mental lapses bother us more and more. Could losing the car keys be the first sign of Alzheimer's disease? Is forgetting the PIN for the ATM an early warning flag for dementia? O…

    By: Terry Graedon August 7, 2017 11 Comments
    Can You Get All Your Vitamins from Your Diet?

    Do you take vitamin pills? How do you know you are getting all your vitamins? What about the time-honored advice to get the vitamins you need from your diet? Many doctors offer this advice. How well d…

    By: Terry Graedon July 6, 2017 9 Comments
    Too Little Vitamin D Could Be Deadly

    Low levels of vitamin D in the blood are linked to increased mortality. That is the conclusion of a large population-based Norwegian study. How did they discover that too little vitamin D might be dea…

    By: Joe Graedon May 14, 2017 36 Comments
    Why Don’t Vitamin D Supplements Work as Ex…

    If you are taking big doses of vitamin D in the hopes of staving off all sorts of health problems, you may be disappointed. Most research has not demonstrated that taking high doses of vitamin D suppl…

    By: Terry Graedon March 23, 2017 3 Comments
    Does Suboptimal Vitamin D Put Athletes at Risk f…

    Vitamin D is critical for muscle as well as bone strength. A study of elite college football players found that nearly half of them had suboptimal vitamin D levels. This may make them more vulnerable…

    By: Terry Graedon February 27, 2017 5 Comments
    Can You Get the Vitamin B12 You Need from Seawee…

    Americans are accustomed to being told to just eat a well-balanced diet. The implication is clear that if they did so, they wouldn't need to take any dietary supplements. But "a well-balanced diet' is…

    By: Terry Graedon November 28, 2016 4 Comments
    How Can You Overcome Long-Term Tingling?

    Tingling, numbness or pain are common symptoms that doctors term "paresthesia." Sometimes the tingling resembles the pins-and-needles feeling when an arm or leg "goes to sleep." What can be done to ov…

    By: Joe Graedon November 7, 2016 8 Comments
    Should You Fortify Your Life With Vitamins and M…

    We continue to hear from many health professionals that vitamins and minerals are a total waste of money. This popular refrain has been repeated for decades: "If you take vitamins and minerals all you…

    By: Terry Graedon September 26, 2016 17 Comments
    Can You Overdose on Vitamin D?

    Doctors generally assume that North Americans are so well nourished that they never need to worry about supplements. In fact, they sometimes fuss that people who take vitamin pills could overdose on …

    By: Terry Graedon September 8, 2016 7 Comments
    Who Needs Vitamin D and Why?

    As people grow older, their ability to absorb nutrients may drop. In addition, many elderly people don't spend much time out in the sunshine. Even if they do, their skin may not make vitamin D efficie…

    By: The People's Pharmacy May 9, 2016 11 Comments
    How to Raise Vitamin D Without Suffering

    Vitamin D is critically important to maintain healthy metabolism as well as to keep bones strong. Many studies demonstrate the hazards of low circulating vitamin D levels, but few show that trying to…

    By: Terry Graedon March 17, 2016 6 Comments
    Why Should Metformin Users Watch Their Vitamin B…

    Vitamin B12 deficiency can lead to cognitive impairment and dementia as well as fatigue and nerve damage. A new study shows that one of the most common diabetes medications, metformin, increases the r…

    By: Terry Graedon March 10, 2016 2 Comments
    Should Men with Prostate Cancer Take Vitamin D?

    A new study indicates that men with prostate cancer should have their vitamin D level tested at the time of diagnosis. That's because low levels of this vitamin appear to be linked to a worse prognosi…

    By: Terry Graedon March 10, 2016 0 Comments
    Babies Born in Winter Benefit from Moms’ V…

    Scientists have lots of evidence that people in northern latitudes have lower levels of vitamin D in the winter, when sunlight is not strong enough for the skin to make this hormone. How does that aff…

    By: Terry Graedon March 7, 2016 4 Comments
    How to Order Your Own Tests for Nutrient Levels

    Do you know your vitamin D status? What about vitamin B12? It can be difficult to discern what your nutrient levels are unless you have the results from a laboratory test. If you have been reading abo…

    By: Terry Graedon February 22, 2016 17 Comments
    Could Vitamin D Be a Lifesaver for Fibromyalgia …

    Fibromyalgia can be a very debilitating condition. It is characterized by extreme fatigue and sleep disturbances, cognitive difficulties and headaches, but above all by fibromyalgia pain that affects …

    By: Terry Graedon January 28, 2016 2 Comments
    Benefits of Prenatal Vitamin D Are Unclear

    Epidemiological research has suggested that low levels of vitamin D are associated with a variety of serious health conditions including cancer, heart disease, inflammatory disorders, diabetes and dem…

    By: Terry Graedon January 11, 2016 13 Comments
    How to Overcome Low Vitamin D Levels Without Sid…

    Vitamin D has been the nutritionists' darling for nearly a decade. Initially, vitamin D was seen strictly in the context of strong bones, and that is still how many doctors see it. For example, when …

    By: Terry Graedon January 7, 2016 11 Comments
    Boosting Vitamin D Did Not Keep Seniors from Fal…

    Vitamin D is crucial to bone health, but also may be essential for muscle strength. Previous research has indicated that older people with too little vitamin D in their systems are more susceptible to…

    By: Joe Graedon November 2, 2015 6 Comments
    Prescribed Medicines Led to Vitamin B12 Deficien…

    Medications can occasionally cause important nutritional deficiencies. That is especially true for drugs that are taken day after day for months or years. Certain widely-used medicines, especially tho…

    By: Joe Graedon October 8, 2015 9 Comments
    Vitamin D Supplements Fall Short on Preventing F…

    Low levels of vitamin D have been linked to muscle weakness and low bone mineral density that could put people at risk for broken bones. (We have written about these problems here.) Do Vitamin D Suppl…

    By: Joe Graedon September 28, 2015 7 Comments
    Trouble Raising Low Levels of Vitamin D

    Vitamin D, once dubbed "the sunshine vitamin" because sun-exposed skin makes the compound, has been the darling of nutritional research over the past decade or so. It has been shown to be essential fo…

    By: Joe Graedon August 6, 2015 6 Comments
    Brits Told to Take Vitamin D Pills

    British citizens are now being advised to take vitamin D pills. For years, UK doctors told their patients: "Just eat a well-balanced diet, no supplements needed." That advice should sound familiar, si…

    By: Joe Graedon July 8, 2015 0 Comments
    Getting the Biggest Bang from Vitamin D3 Supplem…

    Although newspapers seem to like headlines that "Vitamins Don't Matter," the studies showing no discernible difference in health from taking supplements apply to the average person in an ordinary situ…

    By: Joe Graedon July 2, 2015 0 Comments
    Go Out to Play – Vitamin D Plus Exercise L…

    One of the complications of excess weight is that it contributes to chronic inflammation. Higher levels of inflammatory markers such as interleukin-6 are linked to diabetes and some cancers. Investiga…

    By: Joe Graedon June 8, 2015 6 Comments
    Vegetarians Should Be Wary of Vitamin B12 Defici…

    We frequently discuss the benefits of a plant-based diet. Many nutrition experts recommend this approach to feeding ourselves and our families. There are a few nutrients that may be in short supply in…