This condition causes the thyroid gland in the neck to produce too much thyroid hormone, and can eventually lead to goitre and bulging eyes.
Resting heart rate
Resting heart rate is the number of times your heart beats per minute when you are at rest. Learn why it’s an important sign of your heart health and how to check it.
Fertility awareness (natural family planning)
Fertility awareness is a natural way to avoid getting pregnant. It means not having sex when you are fertile, but it is not as reliable as other forms of contraception. Learn more here.