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Perhaps the aging process can't be stopped. But it can be predicted, and new research indicates that people may live longer and lead healthier lives as a result. Researchers have developed a new biological marker that represents the age of a body's bones. It reveals that the speed of physical aging is strongly influenced by genetics.

Scientists have discovered a novel signaling pathway between three organs -- the gut, the brain, and the liver -- which lowers blood sugar when activated. Researchers used a rat model to discover that fats can activate a subset of nerves in the intestine, which then send a signal to the brain and subsequently to the liver to lower glucose or sugar production. But eating a high-fat diet for just three days can interfere with this signal, disabling it so that it does not signal the other organs to lower blood glucose levels.

Depression and anxiety are more prevalent in Tibetan refugees than they are in ethnic Tibetans born and raised in the comparative stability of exile communities in Northern India and Nepal. The study's author concludes that there is a need for continued support for refugee communities, even after prolonged periods of what seems to be successful adaptation in an exile environment.

An oil made of natural fatty acids that is sometimes used as a weight-loss supplement may need to be paired with hormones or other substances to prevent health problems that can follow rapid weight loss, a new study suggests.

Men who develop diabetes in mid-life appear to significantly increase their risk of developing Alzheimer's disease, according to a long-term study in Neurology.

Inserting tiny scaffolding into the brain could dramatically reduce damage caused by strokes, according to new research. Scientists from the Institute of Psychiatry have found that combining scaffold microparticles with neural stem cells could regenerate lost brain tissue.

By increasing production of a blood pressure-regulating enzyme in mice, researchers have found they can enhance the mouse immune system's ability to sense tumor growth. When scientists engineered mice that make more angiotensin-converting enzyme in white blood cells called macrophages, the mice could more effectively limit the growth of injected tumors.

Repeatedly stimulating the mouse brain with methamphetamine depresses important areas of the brain, and those changes can only be undone by reintroducing the drug, according to new research. It explains why the craving of addiction is so stubborn and long-lived. This research also suggests that withdrawal from the drug may not undo the changes the stimulant can cause in the brain.

Children who sleep less may be more likely to report symptoms of anxiety, depression and aggression later in life, according to a new report.

A new study investigating the relationship between stress and the painful symptoms of endometriosis is currently underway. It offers, for the first time, evidence of the negative consequences of stress in the progression of endometriosis, most likely through an effect on the immune system.