“Nutritional yeast.” It might surprise you to learn that those two words are among the most searched for terms on PETA’s website. We know that you’ve got questions about this mystery ingredient—”What the heck is it?” and “Why does it look like the flakes of food I gave to my fish when I was a kid?”—and we’ve got answers. Get ready to meet your new best friend!

Research has shown that seniors benefit physically and mentally from having an animal companion. Sure, adopting a homeless…