| Iron is a 
		very important mineral found in every cell of the body, which is why 
		lacking it can cause both small and lasting health problems.
 Lack of iron is the most common known form of nutritional deficiency. 
		Its prevalence is highest among young children and women of childbearing 
		age and pregnant women, the Centers for Disease Control and Prevention 
		(CDC) says.
 
 There are two types of iron – heme and non-heme. The body absorbs 
		between 15 and 30 percent of heme iron, and only 2 to 20 percent of non-heme 
		iron, according to the Office of Dietary Supplements. That’s why you may 
		be eating a lot of iron-rich foods and still not have enough of it.
 
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		Hair loss
 
 Losing more than 100 hairs every time you brush your hair may be a sign 
		you lack iron. “Iron is required for the formation of proteins,” Dr. 
		Pathak says. Hair is a protein thread that grows from follicles found in 
		the skin. The hair follicles in a person with anemia don’t get enough 
		oxygen. The body has prioritized the oxygen it does have for vital 
		functions because it’s in survival mode, Dr. Pathak adds. As a result, 
		the hair falls out.
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		Brittle nails
 
 The nail has raised ridges and is thin and curved inward. This disorder 
		is associated with iron deficiency anemia, according to NIH. The 
		fingernails consist of hardened layers of protein, which protects the 
		soft tissue. When the body is not making enough hemoglobin, the lack of 
		oxygen weakens the nail, causing them to break.
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		Cold feet and hands
 
 Unexplained cold hands and feet are a common symptom if iron deficiency, 
		according to Iron Disorders Institute. Consuming less than 18 mg for 
		women and 8 mg for men prevents the production of myoglobin and 
		hemoglobin. Blood cells that don’t have enough oxygen get stuck in blood 
		vessels, slowing down circulation, which leads to cold hands and feet.
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		| Swollen tongue
 
 Less iron means less myoglobin in the blood, which keeps the muscles 
		healthy. Since the tongue is actually a muscle, it will feel sore, 
		smooth, swollen and will have a weird pale color, according to John 
		Hopkins Medicine. Sore and swollen tongue can, as a result, leads to 
		problems with chewing, swallowing and even speaking.
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		| Paleness
 
 Poor skin tone is common when the body lacks iron. The skin, being the 
		largest organ on the body, will inevitably suffer if there are not 
		enough red blood cells to deliver oxygen to it. Paleness is generally 
		the result of reduced blood flow or a decreased number of red blood 
		cells, Dr. Pathak says. “This is the body’s self-defense mechanism: The 
		blood is going to more important organs such as the brain and kidneys,” 
		she adds.
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		| Shortness of breath
 
 Lack of iron causes low levels of hemoglobin, which carries oxygen to 
		body cells, Dr. Pathak says. Logically, if the oxygen level in your body 
		is low, you’ll feel out of breath much quicker than normal. “You have 
		less blood which now has to do extra work,” she adds. If you feel like 
		you can’t catch your breath after going up one flight of stairs, you may 
		need to have some iron-rich foods such as liver, meat, beans, nuts, 
		dried fruits, and green vegetables, according to the U.K. National 
		Health Service (NHS).
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		| Headaches
 
 Headache, especially with activity, can be a sign of iron deficiency. 
		Unfortunately, a headache is also a symptom people often ignore even 
		though it can sometimes be life-threatening. Your body’s priority when 
		it doesn’t have enough oxygen is to get it to the brain before other 
		organs. But even then the arteries can swell, triggering headaches, 
		according to American Society of Hematology.
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