Anosmia (loss of smell)
Fatigue, headache, cough, shortness of breath and other COVID-19 symptoms last for weeks or even months after recovery in some people.
An analysis of more than 150 studies found that most supplements don't prevent heart problems. The exception? Folic acid alone or in B-complex vitamin pills.
Although fish oil has a reputation for soothing dry eyes, a recent randomized controlled trial found that placebo capsules of olive oil worked just as well.