Bài giảng

People since ancient times have used aspirin-like medicines to fight pain and reduce high body temperature. Modern research has found other uses for aspirin. The […]

The next time you think about going without sleep, consider this: Laboratory animals that are kept awake for long periods of time … die. Yet […]

If using your voice is difficult, then you know what dysphonia is. The more common name for this disorder is hoarseness.Experts say about one in […]

Human genes are normally organized along forty-six chromosomes in our cells, twenty-three from each parent. But some people are born with an extra copy of […]

A.D.H.D. is attention deficit hyperactivity disorder. Children with A.D.H.D. might have trouble paying attention. They might not seem to listen. They might forget things. They […]

Vitamin D helps bones and muscles grow strong and healthy. Low levels of vitamin D can lead to problems like rickets and osteoporosis. Rickets is […]

This is the VOA Special English Health Report.Three scientists based in the United States have won the two thousand nine Nobel Prize for Physiology or […]