I realize dessert products labeled fat free are high in sugar (which can be converted into fat). But which is the lesser of the two evils: high fat or high sugar content?

I'm on my school's track team and I don't know if I'm doing something wrong. When I run, my testicles seem to get in the way and are sore afterward. They seem too big. Is that possible? The jocks I've tried don't help much and we are issued stretch shorts that don't hide them well at all! It's embarrassing and sometimes it hurts to ride my bike, too. They have always been that size but is there something else I can do?

I just got a diet tea that contains senna. How is this herb bad for your health? Is it unsafe to drink it everyday to lose weight?

Thank you very much.

I am a student who is a very picky and health-conscious eater and have grown tired of the food offered in the cafeteria. A good portion of my dietary consumption is in the form of natural peanut butter. I can sit and consume half of a jar in one sitting because I get so hungry and it is the only thing that really satisfies my hunger. Is this a bad thing, and if it is, how can I go about fixing it?

I swim three times a week for 40 minutes and sauna for 15. When I come out of the sauna my face is beet red and stays that way for about 1/2 hour — is this a sign of something wrong? Also, is it bad to work-out (sit-ups, push-ups) in the sauna?