Medical research

Enzyme that breaks down amino acids may promote aging

Permanently arrested cell growth is known as "cellular senescence", and the accumulation of senescent cells may be one cause of aging in our bodies. Japanese researchers have discovered that a certain enzyme in our bodies ...

Health

Recurrent miscarriage linked to faulty sperm

The early-stage study, from scientists at Imperial College London, investigated the sperm quality of 50 men whose partners had suffered three or more consecutive miscarriages.

Immunology

Immunity connects gut bacteria and aging

Over the years, researchers have learned that the different populations of bacteria that inhabit the gut have significant effects on body functions, including the immune system. The populations of gut bacteria are sometimes ...

Cardiology

A new model takes oxidative stress to heart

Oxidative stress—the molecular wear and tear that reactive oxygen species can exert on molecules and cells—has been linked to a range of human diseases, including heart failure and Alzheimer's disease. But the results ...

Medical research

Sperm quality study updates advice for couples trying to conceive

Could doctors at fertility clinics be giving men bad advice? Dr. Da Li and Dr. XiuXia Wang, who are clinician-researchers at the Center for Reproductive Medicine of Shengjing Hospital in Shenyang in northeast China, think ...

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