Iodine I

Atomic Number: 53
Atomic Weight: 126.9

Human Physiology:

• Essential for thyroid hormone
• Regulation of metabolism
• Need 120-150mcg/day

Prevalence:

• Exists mostly in the ocean

Source:

• Exists in most foods in small quantities
• Iodized salt

Deficiency:

• Goiter (enlargement of thyroid
• Fatigue
• Slow metabolism, increased weight, cold intolerance

Excess:

• Nervousness
• Irritability
• Tremor
• Increased sweating
• Weight loss
• Graves disease (goiter, protruding eyes)