Retrieving viable sperm from men with low fertility and from people who have used estrogen therapy for years has been a challenge, doctors say. A new, less invasive technique has promise.
Thomas Page McBee first visited the national park as a child on a family vacation. Thirty-three years later — and 11 after starting testosterone — he finally reckons with his parent’s death.
A new study found that a birth control pill was 99 percent effective in preventing pregnancy in mice. But don’t expect a human version to hit the shelves any time soon.