I am a 19-year-old male. Over the past three years whenever I urinate, my urine stream splits in two (one continuous stream and one stream which is basically drops of urine.) Is there something wrong??? I also have another question. My grandfather has prostate cancer. I was just wondering when I should begin checks for this type of cancer.

I was told by my dentist that my teeth eroded, due to consumption of too much acidic food. I would like to know what kind of food causes tooth erosion. Do you have a list of these foods?

Is it o.k. to not wear a bra? I haven't worn one for over a year now and I hope to never again! Is it really healthy to wear one? Will they "sag" quicker if I don't? Please tell me I can burn my old bras!!!

I've been hearing a lot about having one health care provider follow my medical history, but I'm fairly healthy and don't have a chronic disease. I've been switching from my local doctors when I'm home to the on-campus docs. Is it really that important, given that I'm a healthy individual?

I have chronic yeast infections. My doctor basically said that I have a pH imbalance and to stock up on Mycelex or similar creams. This answer, to me, is unsatisfactory. There must be something I can do to keep my pH level in balance, or at least on the acidic side. Do lactobacillus and acidophilus tablets keep the vagina more acidic to prevent a yeast infection?

My fingernails fray and chip all the time. I have tried many different nail polishes and nail hardener but nothing helps. I've been trying to grow my nails for the past year and I just can't seem to get them to grow. My mother and older sister don't have any problems getting their nails to grow. Please give me some tips on how to make my nails grow stronger and fast.

I was recently diagnosed with impetigo & was wondering if I had oral sex with my boyfriend if he'd get genital herpes. Thanks!

I was in the sun for seven hours yesterday and I got a pretty bad sunburn. My face has blisters all over it. The redness is severe, and the pain is severe. Any suggestions that you may have will help. To top it off, I am a diabetic and am worried about infection of the blisters.

I find choosing among all of the available sunscreens and sunblocks to be very confusing. Of the following three products I am currently using, which one is giving my skin the most protection: sunscreen SPF 30 with UVA, UVB, and IR sun protection; sunblock SPF 17 with UVA, UVB, and IR sun protection; or, sunblock SPF 50 with UVA and UVB sun protection? By the way, what is the difference between a sunSCREEN and a sunBLOCK?