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Who are the most sleep-deprived people? U.S. researchers say the answer is clear: single mothers. A new report from the U.S.

Prominent vegans share their passion and practices in a growing food movement

Dear Dr. Roach: I read your recent column on PSA screening for prostate cancer.

Can you have too much of anything these days? Surely, by now, you know that you can get too much sugar, too much salt and too many calories, to name a few things. But you can also get into trouble by getting too little of some nutrients.

Dear Dr. Roach: I had a St.聽Jude鈥檚 aortic valve put in in 1998. I have taken Coumadin since that time. A couple of years ago, my doctors changed the goal for my INR to 2-3. I don鈥檛 know why.

Dear Dr. Roach: I鈥檝e been having trouble with boils for a couple of years. Last year, my doctor told me that it was a staph infection.

Dear Dr. Roach: I am a 66-year-old woman who had early-stage breast cancer and routine sessions of radiation after a lumpectomy. Everything went very well. Less than two years later, I had a mild silent heart attack. I have always been healthy.

We鈥檝e been told for years that a nutritious apple a day helps to keep the doctor away.

Dear Dr. Roach: I am an 84-year-old man in good health. I have been taking tamsulosin (Flomax) for the past six months for my enlarged prostate, and it works fine for problems with urination. However, it causes reduced libido and reduced ejaculation.

Dear Dr. Roach: My cousin has a significant degree of liver cirrhosis from a metastatic carcinoid. The carcinoid hasn't grown in a couple of years, but the cirrhosis continues to progress.