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A vitamin supplement that improves metabolism in the eye appears to slow down damage to the optic nerve in glaucoma. In glaucoma, the optic nerve is gradually damaged, leading to vision loss and, in the worst cases, blindness. High pressure in the eye drives the disease. Glaucoma researchers have long theorized the substance homocysteine is somehow relevant to understanding the disease. Now, researchers have investigated the role of homocysteine in several ways. In the current study, the researchers discovered that when rats with glaucoma were given elevated levels of homocysteine, their disease did not worsen. The researchers also found that...

Suicide is one of the leading causes of death in the US. Experts recommend many strategies and treatments to decrease the risk of suicide. Few would put folic acid supplements on that list. The study found patients who filled prescriptions for folic acid, also known as vitamin B9, experienced a 44% reduction in suicidal events (suicide attempts and intentional self-harm). Robert Gibbons, Ph.D. became interested in folic acid in the context of suicide because of a previous study between risk of attempting suicide and 922 different prescribed drugs. The study simultaneously screened each drug for associations with suicide attempts. Surprisingly,...