Lose It For Ever – Dave Elger

The thyroid, a gland found in the neck (just below the adam’s apple on men), produces hormones responsible for regulating metabolism. According to wikipedia, about 3% of the population suffers from an underactive thyroid, or hypothyroidism.

The following is a list of early symptoms (from endocrineweb.com):
Fatigue
Weakness
Weight gain or increased difficulty losing weight
Coarse, dry hair
Dry, rough pale skin
Hair loss
Cold intolerance (can’t tolerate the cold like those around you)
Muscle cramps and frequent muscle aches
Constipation
Depression
Irritability
Memory loss
Abnormal menstrual cycles
Decreased libido

The good news that once diagnosed, most cases of hypothyroidism are treatable (medicinenet.com).

Medical Conditions hypothyroidism