Nutrition Myths
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Selenosis

Selenosis is a disease caused by a chronic oral exposure to high levels of selenium. According to official sources, a high level of selenium is assumed to be over 400mcg per day, although some tests show that 800mcg is still a safe limit. The actual harmful ranges have been noticed at dosages of more than 1,500 mcg. Dosages of more than 3,000 mcg can cause direct DNA damage. The major symptoms are (1, 2, 3, 4, 5):

  • Diarrhea
  • Fatigue
  • Hair loss
  • Joint pain
  • Brittle and discolored nails (nail loss if the conditions is prolonged)
  • Nausea
  • Vomiting
  • Neurological abnormalities (common signs are numb or pins and needles in hands, arms, legs, or feet)
  • Irritability
  • Skin rashes

Regularly eating large quantities of Brazil nuts may lead to selenosis due to very high selenium contents. (read more..)

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