What we eat really makes a difference in how we feel and our quality of life. Just this week, I came across three different studies looking at food and health, from the impact of omega-3s to strawberries to beet juice. A study in Nature Communications found that people who had greater levels of omega-3 fatty acids -- specifically, EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) --…