A deficiency can lead to hypothyroidism. Selenium: "Selenium is crucial for the conversion of [a hormone called] T4 (the inactive form) into T3 (the active form) in the body," says Taylor.

A woman who was diagnosed with thyroid cancer at the age of 20 in 2022 was initially brushed off by doctors with her symptoms ...

Bronchitis is an infection of the tubes that lead to the lungs. It can be acute or chronic. Symptoms include a cough and wheezing. Smoking is a major risk factor. Find out more.