Tag: dietary supplements

Vitamins and Cancer Risk

Vitamins have been promoted as a general panacea, as well as a means of preventing cancer. In reality, high doses of vitamins may even cause cancer.

/ May 6, 2015

Acupuncture, Organic Food, and Other Questions

In this post I respond to some reader mail regarding several different issues - organic farming and pesticides, acupuncture, and herbal supplements. In each case I clarify my position and discuss the evidence base.

/ January 14, 2015

Vitamin D: To Screen or Not to Screen?

Vitamin D, the so-called sunshine vitamin, has generated a lot of attention in recent years. It has been claimed to benefit a wide variety of diseases, everything from cancer to multiple sclerosis. It is widely used along with calcium for bone health. It is added to milk and prenatal vitamins and is prescribed for breastfed babies. Some doctors are recommending everyone take...

/ December 2, 2014

Side effects may include liver failure

“Safe and natural.” It’s a marketing phrase attached to dietary supplements that’s often accepted as self-evident. The marketing works. Supplements have a strong health halo. But evidence suggests that this reputation may be undeserved. Not only are there continued questions about whether most supplements have any health benefits whatsoever, there is also evidence that they can be harmful. We can’t even be...

/ September 11, 2014

A Misguided Apology

A new book by Thomas Schneider, MD, offers A Physician’s Apology. The subtitle asks, “Are WE making you sick?” I was eager to read it, because I could think of many things doctors might be apologizing for: overdiagnosis, overtreatment, ordering unnecessary tests, pathologizing the vicissitudes of everyday life, offering misleading low-fat diet advice, misrepresenting inadequately tested treatments, not putting enough emphasis on...

/ July 29, 2014

John Oliver skewers Dr. Oz for his hawking of diet supplements

As regular readers of this blog know, Dr. Mehmet Oz had a very, very bad day last week, in which he received a major tongue lashing from Senator Claire McCaskill (D-MO) for the scientifically unsupported and irresponsible hyperbole he dishes out day after day on his syndicated daytime television show. Personally, I was tempted to pile on myself, but had to content...

/ June 23, 2014

VacciShield: Pixie dust for an imaginary threat

I know by now I shouldn’t be, but I am still amazed by how readily so many people buy into the seemingly endless array of bogus sCAM nostrums. Many are marketed and hawked for the treatment or prevention of diseases that are poorly managed by science-based medicine. There are countless examples of dietary supplements that are purported to effectively treat back and...

/ June 6, 2014

Diet Supplements or Nutritional Supplements: A Ruse by Any Other Name is Still a Ruse

Nutritional and diet supplements aren't food, nor are they medicine, and they aren't regulated in a meaningful way. But they might be dangerous.

/ February 22, 2011

The Dietary Supplement Safety Act of 2010: A long overdue correction to the DSHEA of 1994?

BACKGROUND: A BAD, BAD LAW One of the themes of this blog has been how, over the last couple of decades, the law has been coopted by forces supporting “complementary and alternative” medicine (CAM) in order to lend legitimacy to unscientific and even pseudoscientific medical nonsense. Whether it be $120 million a year being spent for the National Center for Complementary and...

/ February 8, 2010

Should I Take a Multivitamin?

I’ll start with a confession. I used to do something irrational. I used to take a daily multivitamin, not because I thought there was good scientific evidence to support the practice, but for psychotherapy. I tried to eat a healthy diet and worried about it. By taking a pill, I could stop worrying. Then I found out that higher intake of vitamin...

/ July 15, 2008