Plant-based Protein
According to the International Food Information Council’s
2022 Food and Health Survey, 12 percent of Americans now follow a plant-based
diet and 31 percent say they’ve been eating more food from whole-plant sources.
Meanwhile, there’s no shortage of novel plant-forward
protein sources to choose from, with new powders, milks, and meat substitutes
emerging every month. And, of course, old standbys like beans, quinoa, and tofu
are always available to add animal-free protein to your diet too.
Considering leaning more on plants to fill you up, build
your muscles, and even help you lose weight?
When comparing plant-based protein to animal protein, there
are plenty of factors to consider, from taste to cost. But if you’re turning to
plants for a health purpose, it’s helpful to look at the science behind their
benefits.
Vegetarians have long been concerned about obtaining
so-called “complete” protein from plant sources. Complete proteins are those
that provide all nine essential amino acids the body can’t produce on its own
and must get from food.
Many vegan proteins don’t contain all the essential amino
acids, leading some people to believe that they must mix and match their menu
to create the right balance. A common example is combining rice and beans.
However, many experts now say that pairing specific
vegetarian foods for their amino acids probably isn’t necessary. A
well-balanced diet is likely to supply sufficient amounts of all 20 amino
acids, both essential and non-essential.
In fact, a source on people following vegan and vegetarian
diets found that they received more-than-adequate protein and amino acids. The
authors of the study also went so far as to say that the concept of amino acid
deficiency has been “substantially overstated.”
Still, there is one nutrient where plant-based proteins
can’t compete with their animal counterparts: vitamin B12, responsible for
proper brain function and red blood cell formation. If you choose to go totally
vegan, you’ll likely need to add this nutrient to your diet with a supplement.
Opting for plant proteins over animal ones is likely to
produce positive health effects. Studies have associated plant-based diets with
healthy weight, lower risk of type 2 , and even longer life.
People with allergies to soy or nuts (two of the eight most
common food allergens) may also find a diet high in plant-based protein tricky
to follow. And folks with digestive issues like irritable bowel syndrome may
need to be careful with the higher fiber content of many plant-based foods.
Another concern that requires clarifying: the health effects
of soy. For years, soy foods have been plagued by rumors that they alter
hormone balance or even cause cancer.
Fortunately, current research shows that there’s little
reason for concern around including a tofu-packed stir-fry or steamed edamame
at dinner.
A study in 2020 that tracked over 300,000 women revealed
that eating soy foods actually reduced their chances of developing breast
cancer. Meanwhile, the American Cancer Society contends that soy foods are both healthy and
safe.
Eating more plant-based proteins not only nourishes your
body, it can help restore the planet!
A 2019 study showed that shifting from an omnivore diet to
veganism reduced personal greenhouse gas emissions by 50 percent, while moving
to a lacto-ovo-vegetarian eating pattern brought them down by 35 percent.
Water usage is another key area where plant proteins
outshine animal ones. According to data from the Water Footprint Network, an
advocacy group devoted to solving the world’s water crisis, meats like beef,
poultry, and pork use significantly more water than plant-based proteins like
pulses, nuts, and cereal grains. The water footprint of beef, for example, is
six times higher than that of pulses.
The environmental effects of scaling back meat consumption
are so noteworthy that the U.N.’s 2019 climate change report called for a
global reduction of animal protein.
Even if you don’t elect to go fully plant-based with your
protein consumption, you might consider making some smaller tweaks to promote
planetary health.
What are the best plant-based protein sources?
The best plant-based foods are those that provide not only
ample protein, but other benefits too. For starters, you can’t go wrong with
beans. Beans are unique in that they contain fiber, whereas animal protein does
not. You might be worried that soybeans are one of the top major food
allergens, but soybean allergies are actually less common than you might think.
A study in Nutrition Today shows that the prevalence of soybean allergies is
lower than the prevalence of the other top seven allergens that include milk,
eggs, fish, crustacean shellfish, tree nuts, peanuts, and wheat. Nuts make another excellent plant protein
choice for their convenience and versatility.
Anyone can (and should!) enjoy whole, plant-based foods in a
balanced diet. But some people will need to exercise caution around certain
plant foods. Those on a reduced-sodium or reduced-fat diet will need to check
labels on highly processed plant-based foods like faux burgers, bacon, and
cheeses.
Similarly, if you have an allergy to plant foods like nuts
or soy, be sure to read ingredient lists to avoid these elements. And if excess
fiber is a concern, choose your plant-based protein sources wisely. Soy milk
and tofu, for example, provide plenty of protein with minimal fiber.
The merits of plant-based protein powder versus whey powder
are hotly debated in the nutrition world. Both powders help build muscle and
support weight loss, but plant-based options don’t always feature complete
proteins and may not contain as many grams per scoop. On the other hand, some
people find plant-based powders easier to digest because they don’t contain
lactose. If you’re vegan, you’ll also want to steer clear of whey powder, since
it’s derived from cow’s milk.
Flavor preferences may vary, but
judging by online reviews, certain protein powders are the tastiest cream of
the plant-based crop. Orgain’s Organic Superfood Powder in vanilla bean flavor
has over 50,000 Amazon reviews, 77 percent of them five-star. Numerous other
flavors, from chocolate to strawberries and cream, are available from thousands
of brands. With some personal taste testing, you’re likely to find a powder
that suits your taste buds.
Whether you prefer tofu, beans,
nuts, or a combination of all of the above, plant-based proteins have so much
to offer. They’re usually inexpensive, packed with nutrients, and come in a
delicious palette of flavors. With all the environmental and personal benefits
of these vegetarian macros — and with myths about their inferior stature
debunked — there’s little to keep you from making friends with plants.
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