special subjects
Ginseng
Does ginseng work?
There is no convincing evidence thatginsengenhances mental performance in either healthy people or those diagnosed with dementia. One study found thatginsengdid not prevent colds but did shorten their duration. In one large but short study,ginsengimproved quality of life, according to a subjective report. However, evaluating quality of life (and some other possible effects ofginseng, such as energy) is difficult because it is so subjective. In one study of people with diabetes,ginsengreduced blood sugar levels and improved mood and energy. Some preliminary evidence suggests that Americanginsengmay help relieve respiratory tract infections. 