what it does:

production of thyroid hormones, energy production, metabolism (excess weight), physical and mental development

bodily parts affected:

hair, nails, skin, thyroid gland

deficiency symptoms:

cold hands and feet, fatigue, lethargy, dry hair, irritability, nervousness, low blood pressure, high cholesterol levels, heart disease, slow pulse, retarded development of sex organs, obesity, loss of interest in sex, goitre, cancer of the thyroid


none known

food sources:

seafood, kelp tablets or powder, salt (iodised), dark green leafy vegetables, onions, eggs, whole grains, milk and milk products, meat

Health information is not a substitute for good diagnosis,
and a doctor should be consulted when illness is present