There is no proven way to increase acetylcholine levels. However, some evidence suggests that consuming choline might help. People must get enough choline from their diets to produce adequate levels of acetylcholine.
Foods that contain choline include meat, fish, eggs, beans, and cruciferous vegetables. The Office of Dietary Supplements states that while some animal studies have shown that higher intakes of choline could lead to better cognitive function, other studies have found this unhelpful.
Most people do not get enough choline from their diets. The recommended amount of choline is 425 milligrams (mg) per day for females assigned at birth (FAAV) and 550 mg for males assigned at birth (MAAB).
A person can take choline supplements, but high doses can cause side effects such as vomiting, a fishy body odor, and liver damage.