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Pernicious anemia is the most common cause of clinically evident vitamin B 12 deficiency worldwide. [14] Pernicious anemia due to autoimmune problems occurs in about one per 1000 people in the US. Among those over the age of 60, about 2% have the condition. [8] It more commonly affects people of northern European descent. [2]
54,200 (2015) [ 7 ] Iron-deficiency anemia is anemia caused by a lack of iron. [ 3 ] Anemia is defined as a decrease in the number of red blood cells or the amount of hemoglobin in the blood. [ 3 ] When onset is slow, symptoms are often vague such as feeling tired, weak, short of breath, or having decreased ability to exercise. [ 1 ]
Anemia affects 27% of the world's population with iron-deficiency anemia accounting for more than 60% of it. [114] A moderate degree of iron-deficiency anemia affected approximately 610 million people worldwide or 8.8% of the population. [13] It is somewhat more common in females (9.9%) than males (7.8%). [13]
Iron deficiency, or sideropenia, is the state in which a body lacks enough iron to supply its needs. Iron is present in all cells in the human body and has several vital functions, such as carrying oxygen to the tissues from the lungs as a key component of the hemoglobin protein, acting as a transport medium for electrons within the cells in the form of cytochromes, and facilitating oxygen ...
Cold sensitivity. Cold sensitivity or cold intolerance is unusual discomfort felt by some people when in a cool environment. [ 1 ] Cold sensitivity may be a symptom of hypothyroidism, anemia, low body weight, iron deficiency, vitamin B 12 deficiency, fevers, fibromyalgia or vasoconstriction. [ 2 ] There may also be differences in people in the ...
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Raynaud’s syndrome is one of the most common causes of cold hands, according to the American Society for Surgery of the Hand. It is a disorder that causes the blood vessels that flow through the ...
6% (< 60 years old), 20% (> 60 years old) [4] Vitamin B12 deficiency, also known as cobalamin deficiency, is the medical condition in which the blood and tissue have a lower than normal level of vitamin B 12. [5] Symptoms can vary from none to severe. [1] Mild deficiency may have few or absent symptoms. [1]