As our hair goes gray and our muscles weaken with age, our immune system also changes. In particular, the stem cells that ...

Exercise is one of the top recommended ways to lower blood sugar. A dietitian explains how exercise helps lower blood sugar and recommends the best types of exercise to choose.

Recent research warns that your daily caffeine habit may be quietly causing more lasting harm to your health than you realize ...

Mitochondria isolated from onions entered lung immune cells in mice and restored their energy balance, revealing an ...

Protein supplements are wildly popular, but CR’s tests of 23 products found that more than two-thirds of them contain more lead in a single serving than our experts say is safe to have in a day Much ...

Early research suggests a brain test may predict whether antidepressants will cause sexual dysfunction. There has never been ...

Remarkably, even though radioactivity is a threat to life, scientists can control and use it to diagnose and treat diseases – including cancers. If the radiation is delivered precisely to where cancer ...

GLP-1 is a natural human hormone that regulates blood glucose levels. Scientists have now created long-lasting GLP-1 drugs ...

A good resting heart rate depends on your age, gender, level of physical fitness, and overall lifestyle. Here's what you need ...

Electrolytes are minerals that play an important role in regulating fluids and pH levels in the body. They also help muscles contract.

Medically reviewed by Kelly Wood, MD Key Takeaways If your body doesn't make enough insulin (a hormone in your body that helps regulate your blood sugar) or stops responding to it, you may need to ...