The signs and symptoms of hypothyroidism vary widely, depending on the severity of hormone deficiency.

CNN: Hashimoto's disease

Brown said that being treated for hypothyroidism gives his athletes an edge over competitors suffering unknowingly from the affliction.

WSJ: U.S. Track's Unconventional Physician

In a specialty accustomed to treating older women, Brown calls himself a pioneer for finding hypothyroidism in young athletes.

WSJ: U.S. Track's Unconventional Physician

The signs and symptoms are mainly those of an underactive thyroid gland (hypothyroidism).

CNN: Hashimoto's disease

Even within the camp arguing for a broader definition of hypothyroidism, Brown stands apart for diagnosing it in young athletes.

WSJ: U.S. Track's Unconventional Physician

Hendricks had severe congestive heart failure, chronic asthma, uncontrolled diabetes, hypothyroidism, gout, and a history of smoking and alcohol abuse.

NEWYORKER: The Hot Spotters

She was diagnosed with hypothyroidism in 2007.

BBC: MS symptoms 'eased' by pregnancy