Nutrition Myths


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..)

Related Posts

What is trans fat? Why are trans fats bad for you? Trans fat come from 3 sources: generated through partial hydrogenation; consequence of some cooking methods; from dairy and meat of ruminant animals.
Are sulfites harmful? Sulfites are found in wine and in some foods. Only a small percentage of the population is sulfite-sensitive (mostly asthmatics). They can experience mild to severe (rare) symptoms of sulfite allergy.
Trans fat foods you need to avoid Find out how to reduce your chances of consuming trans fat foods and which foods are the most likely to contain trans fats and PHOs.
Is taking green coffee bean extract safe? There is a lack of sufficient evidence that green coffee extract is unsafe, toxic or unhealthy. However, a small number of people have presented some side effects after having green coffee extract.
Avocado seed: is it healthy or harmful? Avocado seed has not been declared safe to consume, due to limited studies investigating the toxicity and safety of its constituents. See what is the evidence of the potential health benefits of eating dry or fresh avoca...

Get updates

Receive regular updates on nutrition myths, facts and curiosities. All based on the latest scientific evidence.