We all want a healthy immune system to help fight off infection, especially during a pandemic. Vitamin D also supports immune health, but the body doesn’t absorb it well from food, so you’ll want to consider a supplemental form, like D3. Ad“It’s also important to talk about things that make the immune system less likely to perform well, so that is highly processed foods, fast foods, added sugars, those all negatively impact gut health and negatively impact the immune system as well,” Kirkpatrick said. She also recommends switching to a whole foods diet, which is primarily plant based, to keep your immune system strong. Regular exercise and good sleep habits will also help immune health.