Also known as gastroesophageal reflux disease or GERD, acid reflux occurs when stomach acid (and sometimes food and liquid) backs up into your esophagus, the muscular tube that connects your throat and stomach. »

Even if you sail through your teens with clear skin, you may develop acne when you’re an adult. »

For millions of people, allergies—sneezing and wheezing, runny noses and itchy eyes—are the natural consequences of opening a window, working in the yard, or petting the cat. »

Few ailments are as heartbreaking as Alzheimer’s disease. »

Iron-deficiency anaemia is the most common form of the disorder. »

People with anorexia nervosa have an intense fear of putting on weight. »

We all need to be anxious sometimes. It’s a normal, useful response to life’s challenges and dangers. »

Experts still aren’t sure why cartilage, the shock-absorbing tissue that normally coats the ends of bones, sometimes breaks down. »

Asthma attacks can make people feel as if they are suffocating. »