Some experts theorise that low levels of Riboflavin are also associated with cataracts (clouding of the eye lens). It is speculated that Riboflavin supplementation decreases homocysteine levels, and prevent the breakdown of a cofactor of nitric oxide (NO), increasing NO and lowering blood pressure. There is also interest in using Riboflavin in patients suffering from migraine headaches. This may be because nutrients, including Riboflavin, are necessary for normal mitochondrial (cell energy) function. Riboflavin is, in fact, a precursor for both FMN and FAD, which are involved in electron transport in the mitochondrial membrane.