The main reason why you catch a cold or flu is weakened immune system. Vitamin D is a great way to supporting it.


Colds are the most common infectious diseases shared by Americans and are triggered by hundreds of different viruses, rather than bacteria; colds are usually spread by hand-to-hand contact between people, or by touching objects that harbor the opportunistic pathogens, more than by coughing or sneezing

Since colds are viral in nature, antibiotics are of absolutely no value and should be avoided unless your physician diagnoses a serious secondary bacterial infection; antibiotics overuse contributes to the problem of drug-resistant bacterial infections

The key to preventing colds and recovering from them quickly is to maintain a strong immune system, which means getting enough sleep and exercise, optimizing your diet, avoiding sugar, managing your stress, practicing good hand washing technique, and maintaining an adequate vitamin D level

Vitamin D is a potent antimicrobial agent, producing 200 to 300 different antimicrobial peptides in your body that kill bacteria, viruses, and fungi. Suboptimal vitamin D levels will significantly impair your immune response and make you far more susceptible to contracting colds, influenza, and other respiratory infections

Besides vitamin D, a few other natural supplements may be helpful if you catch a cold; my favorites are outlined’


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For a different view take a look at this report, but also read this related commentary.