IMMUNE RESPONSES

✦ Thank you for “How to Strengthen Your Immune System.” A lot has been said about handwashing, masks, and social distancing but not about how to improve our immune systems.

It’s good to protect ourselves from the outside, but more important to do so from the inside.

—Barbara Epps

Weatherford, texas

✦ A doctor once noted that my husband and I must be doing something right to have such healthy immune systems at age 60. All we did was eat blueberries every day. Now 80, we still play tennis and sleep well—and we never go a day without our blueberries!

—Trudy Williams

sanibel, florida