Category: ask-the-doctor

What is a good weight for a 20-year-old man who is 6 feet tall?

Urine that is sometimes dark or pungent can reflect dehydration, diet, or something more. Learn which clues signal a need for testing.

I have a white patch on my tongue. What could it be?

Aluminum is an ingredient in so many products. What are the health risks of aluminum exposure?

That sudden bolt of pain after a cold bite can be startling. Learn what’s happening during “brain freeze” and whether it signals a problem.

I have pernicious anemia. I get a monthly injection of vitamin B12. I have heard that there may be a pill that I could take instead. Is that true?

Eating lots of healthy high‑fiber foods but battling embarrassing gas? Learn which ingredients may be to blame and simple ways to cut it down.

The top of my tongue has taken on a dark brown color and a fuzzy look. Certain foods taste different, but otherwise I feel fine. What might cause this?

What kind of radiation causes thyroid cancer? What about microwave ovens and dental x-rays?

I?m 40 years old, and lately I?ve been wheezing when I play tennis. Can I get asthma at my age?