But brushing your teeth properly won't necessarily stop you getting Alzheimer's.
Surprisingly enough, this is good news for people bitten by snakes.
Warning: Some of these images appear to show animals in distress, and may be upsetting.
Chronic, irrational guilt can be crippling for your mental health.
Is anal a symbol of trust in a relationship?
Princess Diana touched the hands of HIV positive patients in public at the height of the epidemic, in the 1980s.
Toxic levels of antimony were found in a Roman water pipe from Pompeii.
Taking the pill for more than 7 years cuts women's arthritis risk by almost 20%.
Abnormalities of sex chromosomes are the most common genetic cause of infertility.
HIV is not passed on via casual contact or saliva.
A lot of progress has been made since the 1980s to combat HIV and AIDS.
Aaron McCaffrey was found with empty packets for 250 pills when he collapsed in early 2017.
The pathogen can hijack the immune system to spread throughout the body.
Captagon is an amphetamine-like drug to promote alertness and morale.
Waving your shiny, smooth hair goodbye could save your life.