How It Works Ginseng’s actions in the body are thought to be due
to a complex interplay of constituents. The primary group are
the ginsenosides, which are believed to counter the effects of
stress and enhance intellectual and physical performance.
Thirteen ginsenosides have been identified in Asian ginseng. Two
of them, ginsenosides Rg1 and Rb1, have been closely studied.54
Other constituents include the panaxans, which may help lower
blood sugar, and the polysaccharides (complex sugar molecules),
which are thought to support immune function.55, 56 Long-term
intake of Asian ginseng may be linked to a reduced risk of some
forms of cancer.57, 58 A double-blind trial found that 200 mg of
Asian ginseng per day improved blood sugar levels in people with
type 2 (non-insulin-dependent) diabetes.59 Human trials have
mostly failed to confirm the purported benefit of Asian ginseng
for the enhancement of athletic performance.60, 61 One
preliminary trial suggests it may help those in poor physical
condition to tolerate e