So as it turns out, Grandma really did know best. You know those foods she was always urging you to eat, to build strong bones or tame a cold? Recent research has shown that many of them actually work just the way she said they would.
This folk favorite is a legit cold and flu remedy: Research shows it acts as an anti-inflammatory, inhibiting the white blood cells that are active during a cold or flu and irritate the nasal passages, sinuses and throat.
True to its name, this topping is chock-full of protein and B-complex vitamins. It also contains the trace element chromium, which helps balance blood sugar levels, says Andrew Litchy, a naturopathic doctor in Minnesota. Sprinkle some nutritional yeast on popcorn or salads, stir it into marinara sauce or serve it on top of salmon.