“Why would you ever take a healthy body and make a lifelong medical patient out of it?” This is the question Amy found herself posing to her teenage daughter, to the medical and scientific communities, and to society as a whole. For a mother who was unable to prevent her daughter’s gender transition, it was…

Months of exhaustion, persistent loss of taste and smell, blood clotting issues, and now low sperm count. The list of long-term side effects of COVID-19 continues to expand. Men, even if their symptoms are mild, experience a decrease in semen quality up to three months after recovering, according to a new study. “We assumed that semen…

Altering the appearance of one’s gender through hormone treatment or surgery is a permanent decision with lifelong health consequences that go beyond cosmetics. Brittle bones, affected brain development, and the loss of a functioning reproductive system are among the possible side effects of gender transition. It is crucial for those seeking treatment for gender dysphoria…

Many men accept as fact the idea that testosterone will inevitably decrease as they get older. However, new science is showing that diseases of lifestyle, rather than just age, are often the real culprits behind the decline. Testosterone levels have shown a stunning downward trend in the past several decades. The standard American diet is…

Since the early 1980s the number of twins born in the United States has risen by 60 percent. From the parents’ point of view, that may mean getting two for the price of one (hooray!) or signing on for double trouble (ut oh). Still, whether twin parents are delighted or terrified, scientific research suggests that…

In findings that scientists fear may have implications for humans, researchers say exposing frog larvae to a common weed killer leads to reproductive abnormalities. These abnormalities may impair sexual behavior, and be a factor in the current decline in the worldwide frog population. The study, the first to look at levels of the herbicide atrazine—which…

Just say the words gonads, testosterone or any of the unprintable slang associated with testicles, sex, and male virility and you’ll get a laugh or at least amused looks. Now, say those words again, but in a context that says, “You’re going to lose that capability, son,” and watch what happens. The collective scream you…

As we age, we begin to experience many different changes to our bodies and health. For men, one of these significant changes is a reduction in testosterone, which can lead to unwanted symptoms. But how can you tell if you are enduring regular changes or if they are a result of low testosterone? And if…

Male-born transgender athletes retain their physical advantages over biological female opponents, even after taking testosterone suppressants, doctors said. In an interview with The New York Times, a Mayo Clinic doctor, an international physiologist, and a Harvard University evolutionary biologist offered their take on the performance of transgender swimmer Lia Thomas, who competed as a woman…

Testosterone levels in men are declining at an alarming rate. Most men between ages 25 and 50 who are tested at my office have levels around 300 ng/dL or lower, when they would feel their best at around 800 ng/dL. Low testosterone leaves men with a range of symptoms and weakens their long-term health. This hormone…