You can’t prevent cold and flu viruses from making their fall appearance, but you can bolster your immune system, making it better prepared to fend off attacking viruses. And the tools might be no farther away than your refrigerator.
http://www.theglobeandmail.com/life/health-and-fitness/health/8-foods-that-can-help-you-stay-healthy-this-cold-and-flu-season/article21079925/