Vitamins and supplements like zinc and cod liver oil are often touted for their ability to boost your immune system, but Jeffrey Bland, the "father of functional medicine," says that's not actually ...
Medically reviewed by Daniel More, MD Key Takeaways Echinacea may lower your risk of catching a cold, while zinc is more ...
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AHCC is an all-natural substance that is extracted from certain fungi, specifically a species known as basidiomycetes, and converted into a supplement that people can ingest. One of the most popular ...
"I've heard, 'I can boost my immune system if I take a lot of vitamins.' It could be vitamin D, vitamin A [or] zinc," Bland says. "[But] those nutrients don't boost the immune system. Those nutrients ...