When thyroid stop working or under active, the condition is called hypothyroidism. Its major cause is Iodine deficiency. Its symptoms are
- Goiter
- Fatigue
- Weight increase
- Constipation
- Depression
- Loss of muscle tone
- Arthritis
- Thin and brittle hair and fingernails.
- Itchy skin
- Palpitation
- Hoarse voice
- Hair loss