The food you eat to fuel your body affects your quality of life. As you get older, you might start to notice that different foods affect how you feel. Some foods give you the energy that lasts all day, while others leave you feeling tired and sluggish. Enter vegan diets. These plant-based diets are praised for their health benefits. A 2018 Gallup poll revealed that 3% of adults 65 and older said they ate a vegan diet, and 3% of adults between ages...