The common cold costs the U.S. economy $40 billion a year and in any given year, nearly half of the United States population will catch a cold and 40% will develop the flu.  However, we are not defenseless against them.

The common cold and the flu are believed to be caused by exposure and susceptibility to a variety of common viruses; however, not everyone who is exposed to these viruses catches a cold or the flu. 

This suggests an ebb and flow in immune levels in each individual, dependent on stress, diet, amount of rest, and other factors—that can result in one’s susceptibility to such invaders as cold viruses and flu viruses.   For this reason, many emphasize strengthening one’s immune system in order to safeguard it from susceptibility.

Learn how the immune system works (in a short course within this course), why antibiotics are NOT effective against the cold—even though there are about 41 million prescriptions written for cold sufferers each year; what foods and supplements are effective for strengthening immunity; when you should exercise when battling a cold or the flu; the necessity of proper hygiene; the effects of air, aircrafts, and airborne allergens; the importance of an optimistic attitude for health—and MUCH more.

This course is fully referenced/footnoted.