Selenium Se

Atomic Number: 34
Atomic Weight: 78.96

Human Physiology:

• Component of glutathione peroxides that protects against free radicals

Prevalence:

• 12-20.3 mg present in the body
• Soil and water

Source:

• Brewer's yeast, wheat germ, butter, garlic, grains, sunflowers, organic meats, shellfish

Deficiency:

• Decreased thyroid function
• Kershan disease-chronic deficiency that results in heart disease

Excess:

• Numbness, tingling in fingers, toes
• White spots on nails
• Hair loss
• Dizziness, fatigue