Testosterone is an important hormone. It can boost libido, increase muscle mass, sharpen memory, and bump up energy. Yet, most men lose testosterone with age. A reported 20 to 40 percent of older men ...

If you've been diagnosed with an abnormally low T, testosterone replacement therapy (TRT) offers a lot of benefits. But there are risks, too. Here's what you need to know before you start TRT. If you ...

Dear Dr. Roach: I have had over 50 vaccinations in my life (I’m 78), most of them while I was in the military. I have often wondered how the vaccine spreads throughout the body, as the shots are ...

LONDON (Reuters) - A long-acting injection developed by GlaxoSmithKline and given once a month has proved as effective as standard daily pills for controlling the AIDS virus, lifting prospects for the ...

New York Mets starting pitcher Zack Wheeler has undergone a series of injections to get back to full health following a stress reaction in his right arm that cut his 2017 season short. Wheeler told ...

Around the world, more than 17 million sleeves have rolled up for the first COVID-19 vaccinations, and Australia will start its program next month. Like most adult jabs, this slew of vaccines — ...

(CNN) — When you go to get your newly updated Covid-19 booster this fall, you might want to choose the arm the vaccine goes in carefully. The immune response may be stronger if your booster goes in ...