Health

Q. I would like to know more about the use of testosterone replacement in men. My understanding is that a recent large-scale study showed that men using testosterone replacement therapy did not have more cardiovascular risks. That’s been a long-running concern of the medical community. Am I correct?

The Food and Drug Administration has approved the first GLP-1 pill for weight loss, its manufacturer Novo Nordisk announced Monday, a milestone in the growth of the revolutionary drug.

Have you ever searched for information about the side effects of a medication? These days, most people put the name of their drug into a search engine along with the phrase "side effects." Whatever comes up is assumed to be an authoritative answer.

Q. Last weekend, I was at a party in an apartment packed with people, and two days later, symptoms of the flu came on hard and fast. Now on the fourth day, my fever, which hovered around 100.6 the whole time, has come down to 99.6. My body aches, and the coughing has made my rib cage sore.

Aging taps us on the shoulder in many ways: wrinkles, thinning hair, loss of flexibility, slowing of the brain. But the process also unfolds at a more fundamental, microscopic level, as the energy source inside most cells deteriorates.