These
amino acids are used to break down food, provide energy for the body,
build muscle and much more. And not having enough protein in the diet,
and in turn not having enough amino acids in the body, can result in
muscle loss, a weaker immune system and even weaker bones in some cases.
There are 20 amino acids found in protein sources. Nine are "essential," meaning that your body can't make them, and therefore it is essential that people consume them from their diet. Nonessential amino acids are those that the body can produce,
making it not essential to consume them (though adequate protein
consumption can help fill in any gaps). Not all protein sources contain
all 20 amino acids—some contain a combo of some essential and
nonessential amino acids. This is one reason why having a varied diet is
important. By eating different protein sources, you are more likely to
consume all of the essential amino acids you need while meeting your
overall protein needs.
Protein foods come in many forms, from animal-based to plant-based options.
Among the many choices out there, here are eight protein choices to eat
every week that are nutrient-dense, delicious and versatile.
1. Pistachios
Pistachios are a popular snack nut that is also a great source of protein, with 6 grams per 1-ounce serving,
and they provide all nine essential amino acids. Plus, about 90% of the
fats found in pistachios are unsaturated, 1 ounce has more fiber than a
cup of broccoli (3 grams of fiber) and they're a good source of vitamin B6, phosphorus, thiamin and copper.
And when it comes to antioxidants, pistachios provide a significant amount. A new study published in the journal Nutrients
found that pistachios have an antioxidant capacity that rivals other
popular antioxidant-containing foods, including blueberries,
pomegranates, cherries and red wine.
2. Eggs
Eggs
contain high-quality protein with all of the essential amino acids. And
nearly half of the egg's protein is in the yolk, so be sure to eat the
whole thing.
3. Lentils
Pulses
like lentils are nutritional powerhouses that pack a serious punch when
it comes to their health benefits. They are rich in important
nutrients, including fiber, protein, folate, potassium and iron.
With 9 grams of protein per half-cup serving,
lentils offer a filling alternative to animal proteins. Lentils and
other pulses make a perfect complement to cereal grains, as together
they provide a complete essential amino acid profile. Due to their high
nutrient density, lentils and other pulses (like chickpeas or black
beans) can be considered both as a protein and a vegetable.
4. Chicken
5. Greek Yogurt
Greek
yogurt can have all three macros, depending on the type you choose, and
has an especially impressive amount of protein compared to other types
of yogurt. According to the USDA, a small container of Greek yogurt (7
ounces) contains 20 grams of protein and all nine essential amino acids.
You can use plain Greek yogurt as a substitute for sour cream or mayo, as a protein source in smoothies.
6. Fish
Regularly
eating fish is linked to a slew of health benefits, including
cardiovascular, neurocognitive and psychological. However, 90% of Americans don't meet the recommendation
to eat seafood—which includes fish and shellfish—at least twice a week.
Fish, especially oily, cold-water fish (like salmon or tuna), is one of
the best sources of omega-3 fatty acids, which are important for everything from your heart to your brain.
7. Quinoa
Quinoa
is often thought of as a carb-rich food, but this grain is also a great
plant-based source of protein, and it contains all of the essential
amino acids.
One cup of cooked quinoa provides 8 grams of protein, and it is also packed with fiber and antioxidants.
8. Tofu
Tofu
is made from soy, which is naturally high in protein. It's convenient
to cook, inexpensive and a popular choice for plant-based eaters and
meat-eaters alike. Tofu is also rich in calcium and copper, and boasts 22 grams of protein per half-cup serving. Try it in a stir-fry, salad, soup or even a smoothie.