Choline is a water soluble macronutrient that is related to other vitamins, such as folate and those in the B vitamin complex family. Forms DNA and cell structures, supports the central nervous system, maintains healthy liver function, helps protect memory and loss of brain function, helps with exercise performance and muscle function, may help maintain heart health. It also supports a healthy pregnancy and is important for children's growth and development. The RDA for Choline is 125- 150 mg for infants and babies; 150- 250 mg for 1-8 years children ages; 250- 375 mg for 8-13 teens ages; 425- 550 mg for women above 14; 550 mg for men above 14 ; 450-550 mg for pregnant women and 550 mg for women who are breastfeeding: . Symptoms of a choline deficiency may possibly include: low energy levels of fatigue, memory loss, cognitive decline , learning disabilities, muscle aches; nerve damage and mood changes or disorders. A choline deficiency may also play a part in age-related cognitive decline, including memory loss and Alzheimer’s disease. Choline is considered to be a safe nutrient and rarely causes negative side effects. However, like all nutrients, when too much is taken, it can become toxic. That can, indeed, cause symptoms including diarrhea, nausea, fatigue, higher blood pressure, excessive perspiration and a fishy odor of the skin.