Although the conclusions of clinical trials are still split pretty evenly pro and con, a study from the Annals of Internal Medicine suggests that folks who have been popping zinc supplements to ward off colds may be on to something.

• 虽然临床实践所得出的结论正反观点仍势均力敌，但是(国内医学年刊)上的一项研究指出，一直坚持补充锌预防感冒的人感到效果还行。