Much of the rest of the world, however, uses A4, which is 21 cm x 29.7 cm. In the U.S., a letter sized sheet of paper is 8.5 x 11 inches; legal size is 8.5 x 14 inches<br /><br />Much of the rest of the world, however, uses A4, which is 21 cm x 29.7 cm.
Hair loss often signals a variety of medical problems and could be the result of a low amount of red blood cells in your system. This condition is called anaemia. The body needs certain nutrients to produce more red blood cells and if there is a lack of one or more of these nutrients, anaemia will develop.
Another major cause of hair loss is hypothyroidism. Iron is also one of the key nutrients required for conversion of T4 (inactive thyroid hormone produced by the thyroid) to T3 (active thyroid), and iron deficiency increases the bodyâs tendency to produce more of the inactive reverse T3, rather than the active T3 hormone.