Peruse the wellness aisles of your local health food store or browse the many online supplement shops, and you’ll find a vast selection of protein powders to choose from: whey, casein, pea and soy ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Lea Uradu, J.D., is a Maryland state registered tax preparer, state-certified notary public, ...