Medical science has progressed so much in the last 100 years that knowledge once believed to be tried and true about the treatment and prevention of illness has proven to be pure nonsense.
People used to believe in the healing power of products like castor oil, morphine and mercury only to discover they did more harm than good, and now we're finding out that vitamins don't really help cure illness either.
But some people still believe that taking vitamin c or zinc will help prevent or cure a cold, a claim backed by products like EmergenC and Airborne, but as you'll see in this episode of SciShow these vitamins don't help cure a cold, or anything else for that matter.
-Via Geeks Are Sexy