These five signs will help you determine whether you're packing enough protein into your diet.
chicken drumsticks on a baking pan

Although protein deficiency is rare in the United States, it's still important to consider whether or not you're getting enough of the macronutrient in your diet. According to Harvard Health, you can determine your daily dietary protein needs by multiplying your body weight by .36. And even though it's likely that your daily recommended protein levels are easily met with a few servings of a day, some individuals are at a higher risk for protein deficiency. If you're concerned you're not getting enough on a daily basis, here are five weird signs that you may be right.

Hair, Skin and Nail Health

When protein is digested, it's broken down into amino acids that are used as building blocks for muscle tissue, hair, skin and nails. It's important to get enough keratin-a structural protein that is formed by various amino acids-for healthy skin and nails. If you're experiencing brittle hair and nails, it may be a sign that you aren't consuming enough protein.

Studies also show that collagen-a structural protein found naturally in the tissue of our skin-can reduce wrinkles and keep your skin healthy and firm! So, if you notice premature sagging or sudden loss of elasticity in your skin, you may want to reevaluate your protein consumption.

Scallops with White Bean Ragu & Charred Lemon


Do you have puffy feet, ankles or legs that just don't seem to go away? You might be suffering from edema-a condition that causes tissue to retain water. And although it can have many causes-including prolonged standing and sitting-protein deficiency is one of the many risk factors. Protein helps retain salt and water in the blood vessels, so a lack of protein-specifically albumin-can lead to water leakage into tissue that results in extreme puffiness.


It's normal to be tired after a long day at work or an intense workout, but if you're suffering from fatigue at random times (that even a good night's sleep won't fix) you may have anemia. Anemia is caused by inadequate oxygen supply to your body's tissue due to a low red blood cell count -which is often a result from insufficient iron, folate or B12. Since all of those nutrients are found in protein sources, anemia can be your body's way of telling you that you're not getting enough protein. (Unfortunately, B12 is only found in animal protein, so if you're vegan you'll want to ensure you're eating fortified foods or taking a B12 vitamin.)

seared tuna with bulgur and chickpea salad

Immune System

Since protein plays an integral role in immune system function, certain signs-like getting sick more often than normal, prolonged sickness or trouble healing wounds-may indicate that you have a low protein intake. If any of these symptoms sound familiar, you may want to consider incorporating some of these high-protein foods into your diet.

Increased Hunger

Protein has more staying power than carbs, so if you're hungrier than usual after a meal, you may not be consuming enough protein. If you're struggling to regulate your appetite, try adding some of our favorite healthy high-protein recipes to your weekly routine.