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CNBC: You can’t boost your immune system with supplements, says functional medicine expert—here’s what you can do
May 28, 2026
CNBC: You can’t boost your immune system with supplements, says functional medicine expert—here’s what you can do 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 ... You can’t boost your immune system with supplements, says functional medicine expert—here’s what you can do