Another example is lecithin. Purported to lower cholesterol and enhance brain functioning, it is made from either soybeans or egg yolks. Lecithin made from soybean extract is less pure and has less effect than that made from egg yolk. But lecithin made from egg yolk has to be swallowed along with the egg fat, so how can it be effective in reducing cholesterol?
再以號稱能降低膽固醇、強化腦功能的卵燐脂為例，原料又分大豆和蛋黃兩種，大豆萃取的卵燐脂成分少、效果差；蛋黃萃取的純度較高，但包在蛋油中，食用時就要連蛋油一起吞下肚，又怎麼能降低膽固醇呢？