In the second edition of Food and Nutrition: What Everyone Needs to Know(R), Harvard- and Columbia-trained scientist and food lover Dr. P.K. Newby applies a multidisciplinary lens and ecological paradigm to shine a spotlight on today's food problems, farm to fork and far beyond, while sharing the keys to creating healthy and sustainable diets for ourselves and the planet we share. Updated chapters reveal striking new data on plant-based diets, longevity, and sustainability; food and mental health; diet, COVID-19, and immunity; mega-factory-farming and climate change; and ultra-processed foods and chronic disease.