A poor diet that lacks essential nutrients generally causes nutritional deficiencies. The body stores nutrients. Therefore, a deficiency is usually detected after a prolonged lack of a nutrient. A number of diseases and conditionsâincluding colon cancer and gastrointestinal conditionsâcan lead to an iron deficiency.
Iodine is LIKELY SAFE for most people when taken by mouth at recommended amounts or when applied to the skin appropriately using approved products. Iodine can cause significant side effects in some people. Common side effects include nausea and stomach pain, runny nose, headache, metallic taste, and diarrhea.
In your body, about 70 to 80% of iodine is found in the thyroid gland in the neck. The rest is distributed throughout the body, particularly in the ovaries, muscles, and blood. If your body does not have enough iodine, you can develop hypothyroidism (low thyroid hormone levels). Symptoms include sluggishness or fatigue, weight gain, dry skin, and sensitivity to temperature changes. Deficiency happens more often in women than in men, and is more common in pregnant women and older children.