Measuring Menstrual Periods
What is considered the first day of a woman’s menstrual cycle? Is it the day some spotting has shown up, or the day of a regular flow?
What is considered the first day of a woman’s menstrual cycle? Is it the day some spotting has shown up, or the day of a regular flow?
Parts of the brain’s outer layer, the cortex, may become thinner before people develop symptoms of Alzheimer’s disease, a new study suggests. Researchers were able to see the difference on a magnetic resonance imaging (MRI) scan. The study included 159 people. Their average age was 76. They were given MRIs as the study began. They also took tests of brain functions such as memory and problem solving. About 12% of the people showed thinning of the cortex. This was seen in areas that also become thinner in people with Alzheimer’s disease. Most people had a cortex of average thickness. About 15% had a thicker cortex than average. People in these 3 groups did not differ in their results on brain function tests. But about 3 years later, 21% of the group with the thin cortex had lower scores on brain function tests.
More women are remaining sexually active after menopause, but concern about sexually transmitted infections has not been a priority, leading to an increase in such infections.
I’m 64 and have been diagnosed with uveitis in my right eye. What causes it, and what is the best treatment for it?
Dr. Thomas Lee, the editor in chief of the Harvard Heart Letter, introduces an issue focused on the Million Hearts initiative, which aims to reduce heart disease.
The director of the Centers for Disease Control and Prevention discusses the goals of the Million Hearts initiative.
I have Dupuytren’s contracture in both hands. I’ve had “needle” surgery in one hand, and the fingers straightened. But they seem to want to contract again. What can I do?
Surprisingly, having lower body fat may offer some health benefits, though diet and fitness are still vital to good health.
Rather than focus on individual nutrients, nutrition guidelines now encourage paying closer attention to the types and quantities of foods we eat.
Managing cholesterol involves more than just changing eating habits.