James Heffley, Ph.D.

Can you tell me the benefits of taking potassium? Is there enough in my multivitamin/mineral? What foods are rich in potassium?

Is coral calcium really better than other calcium sources?

I recently heard about a product called NADH that can help people with chronic fatigue syndrome. I don’t have that problem, but I certainly get tired sometimes and wish for something safe that would give me an energy boost. Would NADH help and at what amount?

I would like to try SAMe for depression. What is good and what is bad about it, and is it safe?

I would like to try SAMe for depression. What is good and what is bad about it, and is it safe?

How do I know if I need a B-vitamin supplement? What does it mean to “balance” the B-vitamins?

My mother has been taking 400 IU of vitamin D for several years. She has severe osteoporosis that was still getting worse until she increased her vitamin D supplement to 800 IU per day. What is the safe limit for a vitamin D supplement?

Spring pollens are in, and mold just won’t let up. How can I stop my sneezing fits without resorting to antihistamines?

I want to try a supplement of DHEA. Is it worth paying extra for 7-keto DHEA, since I’ve heard it has less chance of side effects?

What is inulin good for, and where can I buy it?