Other Effects

AGE, but not fresh garlic, has been shown to have antioxidant effects. The compounds with the highest activity are SAC and S-allylmercaptocysteine (70,71). Garlic exerts antioxidant effects by scavenging free radicals, enhancing superoxide dismutase, catalase and glutathione peroxidase, and increasing cellular glutathione. These effects of garlic may play a role in the cardiovascular, antineoplastic, and cognitive effects of garlic (2).

Aged garlic extract has been shown in in vitro and animal studies to protect against liver toxicity from environmental substances, such as bromobenzene (72), protect against cardiotoxicity from doxorubicin (73), and improve age-related spatial memory deficits (74). A placebo-controlled human study showed that garlic may also be useful as a tick repellent (75). In addition, a double-blind, randomized, placebo-controlled human study showed that garlic supplements taken over a 12-week period in the winter significantly reduced the incidence of the common cold (p < 0.001), and reduced the duration of symptoms when they occurred (p < 0.001) (76).

0 0

Post a comment