• Reduces risk of heart disease, cancer, allergies and inflammation
  • Supports DNA repair
  • Component of anti-oxidant enzyme glutathione peroxidase and works with Vit E in preventing free-radical damage to cell membranes
  • Metabolic support – needed by liver for conversion of thyroid hormone T4 to T3
Source and function notes
  • Soil quality and mineral content a greater issue for this mineral
  • Best sources from meats and seafood, wholegrains and eggs
Vegetable sources Red Swiss chard; turnips; garlic; Mushrooms; radishes, green beans; Onion; Carrots; Cabbage
Fruit sources Orange juice, Grape juice, Orange
Nut and seed sources Brazil nuts, Pecans, Hazelnuts, Almonds
Absorption factors
Spice and herb sources
Deficiency factors
  • Increase risk of
    • Cancer and Cardiovascular disease
    • Inflammatory diseases (e.g. asthma)
    • Conditions associated with increased free-radical damage: e.g. premature aging and cataract formation
Toxicity and dangers Can be toxic: excess selenium intake causes liver problems due to interference with sulfur enzyme activity and sulphur systems as well as impaired bone and tooth growth
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