CNN.com - Health - Diet and Fitness Experts

Will jogging hurt an obese person's joints?

Tue, 06 Mar 2012 20:09:24 GMT

I am male, 55, 6 feet 5, 300 pounds. I am in good health (other than weight), active in biking and weight training but am interested in jogging. Am I too large to train for a 10K? Would that be detrimental to my joints?

Is creatine a safe supplement?

Mon, 12 Dec 2011 19:53:58 GMT

I am a 48-year-old man who weight trains four times a week. I am thinking about taking creatine. What is your thought on this supplement?

What foods cause flatulence?

Fri, 18 Nov 2011 13:16:31 GMT

I seem to have a pretty bad case of flatulence and have been reading about what foods may be contributing to it. It appears that a lot of my diet could be responsible. How does someone find the right combination of foods when most of my diet is on the "list" and still eat healthy? Not a big meat eater, I'll usually choose fish. I eat mostly (fresh) vegetables, (fresh) fruits and whole grain breads. Any help or suggestions you can provide will be greatly appreciated.

How can I exercise safely in winter when I have a cold?

Fri, 11 Nov 2011 12:27:36 GMT

Like everyone else, I am intent on losing weight in the new year. I am in my mid-20s, very overweight, and trying to change back to the healthy lifestyle I used to have. My specific concern is about walking in the cold, with a cold.

How can nutrition help prevent Alzheimer's?

Fri, 04 Nov 2011 11:17:03 GMT

How can nutrition affect your health, as far as risk of Alzheimer's disease? I have a strong family history and want to do everything that I can to avoid getting Alzheimer's.

Does diet really matter in breast cancer?

Fri, 28 Oct 2011 17:01:30 GMT

Does diet really make a difference when it comes to breast cancer?

Is it possible to lose 15 pounds in one month?

Fri, 21 Oct 2011 11:44:35 GMT

I'm 16 years old, 5 foot, and 125 pounds. I would like to lose 15 pounds in one month. Is this possible?

What's healthy eating for a diabetic?

Sat, 15 Oct 2011 00:42:41 GMT

Being a type 2 diabetic, I have too many different ideas coming at me. Do you have any advice on what diet to follow?

Does your blood type affect your diet?

Fri, 07 Oct 2011 16:22:28 GMT

Hi, Dr. Melina. I was wanting your opinion on eating for your blood type. I am reading a book about it and wanted to know your thoughts.

Which test should I trust when measuring my body fat?

Fri, 30 Sep 2011 11:23:09 GMT

I am a 24-year-old female who is a fitness enthusiast. I have been trying to lose some weight. My weight is 113 pounds ( it was 120 and I lost 7). Recently I got my BMI, lipid profile, cholesterol, etc., tests done and all of them are normal. I have a normal BMI of around 22. However, when I took a body fat test online, it says I have body fat of 38% and I am obese. I am extremely confused, as to which metric to trust and what should be my ideal weight (I have a small frame). Should I be around 100 pounds?