Vitamin B9 is one of the 8 B vitamin family members. In the natural state in foods is known as folic acid. Used in dietary supplements during manufacturing, such as vitamins, folic acid has been called. Vitamin B9 help the brain function properly in the proper amount of intake to prevent anemia - abnormally low count of red blood cells. Pregnant women are usually anemic, vitamin to prevent birth defects and miscarriage B9 will be asked to take a higher price than normal. Recommended dietary allowance (RDA) is micrograms vitamin B9 400 (mcg) is - most adults, the brain, affecting the digestive system / folate deficiency usually can have serious consequences diet. Folate and the overall general health to consume the proper amount of folic acid. Vitamin B9 is too little, forgetfulness, irritability, can lead to depression and mental stagnation. The lack of this vitamin is also important, gastrointestinal disorders, anorexia, gingivitis, shortness of breath can lead to poor growth in infants and children. Pregnant women / folic acid folic acid deficiency, cleft palate, or may even cause birth defects and brain damage, leading to pregnancy loss. In addition, there is growing evidence of vitamin A that may contribute to low levels in Alzheimer's disease.