The following Mark's Daily Apple article was written by Marksissons and is narrated by Brock Armstrong.

12 signs, you need to eat more protein.

Protein is an essential macro-nutrient. We can't make it. We can pull it from

our structural tissues, our muscles, our tendons, our organs if we're in dire need of amino acids,

but that's not a healthy long-term strategy. For all intents and purposes, we need to consume

protein to stay healthy, fit,

happy, and long-lived. But we need to consume the right amount at the right times. And since I've

already talked about how much protein certain populations should be eating on a general basis,

shown you how to identify when you need more carbs, and explained

how to tell if you need more fat, today's post will cover 12 situations, symptoms, and signs that

indicate a dire need for more dietary protein. Let's jump right in. You're older than you used to be. For years, the elderly

have been told not to expect anything from their bodies but decay and decrepitude. They can lift

weights if they want, but they're not going to get very strong and if anything, they'll just improve tone and balance.

Well, that's nonsense.

The elderly can absolutely get stronger and even build muscle, and improve their bone mineral

density by lifting heavy things.

Maybe not as easily as a 22-year-old, maybe not as much as when they were younger, but they can do it.

There's just one caveat.

They need more protein than their younger counterparts.

The elderly aren't as efficient at processing protein.

To maintain nitrogen balance or tip the scales toward lean mass or curl, an older person is

going to need more protein than a younger person, all else being equal.

...