As you age, a glance in the mirror may reveal a few fine lines, wrinkles, age spots and sagging skin. You may become more worried about the thickness of your hair, your creaking joints or a loss of muscle.

Ingestible collagen,┬áthe protein supplement that’s skyrocketed in popularity, is said to help improve all of those things. So should you begin popping a collagen pill, or sprinkling it in your coffee, as part of your anti-aging routine?