Lecithin eases the symptoms of dementia and other neurological maladies, according to Drugs.com. Scientists believe that this is because lecithin is a source of choline, which is a precursor of the neurotransmitter acetylcholine, or Ach. Ach supports memory and other brain functions.
Lecithin also may play a role in regulating levels of cholesterol, according to WebMD. This is true of otherwise healthy people and people who are already taking cholesterol-fighting drugs called statins. Some scientists also believe that it reduces the risk of atherosclerosis, though the studies that suggest this are outdated and newer studies are not definitive, according to Drugs.com.
Lecithin has also shown promise in treating eczema and anxiety, claims WebMD, and it seems to be effective in regulating bipolar depression. It seems to reduce the symptoms of the manic phase of the disorder.
Though it has also been tried to treat diseases of the gallbladder, lecithin is probably not very effective in this role, according to WebMD; however, it seems to work to reduce fat accumulation in the livers of people who are receiving parenteral nutrition. Lecithin is also an emulsifer and is used in some eye medications to make sure that the medication stays in contact with the cornea.