Vitamin B9, also known as folate, was discovered in the mid-20th century. In the 1930s, a substance was identified in leafy green vegetables that was essential for the growth of young animals. This substance was later named folate and was recognized as an essential nutrient for human health.
Folate is well understood for its role in DNA synthesis and cell division, and it is particularly important for the proper development of a fetus during pregnancy. It is widely used in the prevention and treatment of folate deficiency and is considered an important component of a balanced diet. The discovery of folate and its importance in human nutrition was a significant milestone in the field of nutrition science.