Anti-nutrients naturally occur in food and can block the amount of other nutrients available for your body to use. But their effects aren't all bad, which is why they're undergoing an image makeover.
At-home mask makers should carefully consider fit and fabric variables when designing face coverings to help prevent transmission of SARS-CoV-2.
For your 2020 New Year's resolutions, think about keeping the microbes that live inside your gut healthy. Look after them and they'll look after you.