One of the UK's most popular pills could be putting users at an increased risk of deadly liver failure, bone problems and bleeding disorders, an expert has warned.

Excess vitamin A also has an impact on pregnant women and fetuses in the womb, so it can cause congenital birth defects.

As time goes by, our bodies change, you know, even the brain. A major change is how brain structure seems to shrink with age. Studies show that this happens at both large and small levels inside. You ...