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<\/figure>\n\n\n\nRegarding protein, getting caught up in numbers and recommendations is easy. The truth is, the amount of protein your body needs depends on a variety of factors, including your:<\/p>\n\n\n\n
- Age<\/li>
- Gender<\/li>
- Physical activity level<\/li>
- Overall health<\/li><\/ul>\n\n\n\n
If you try to \u201cgoogle\u201d how much protein you need, you\u2019ll likely find various suggestions. However, some dietary recommendations can be misleading, so we\u2019ve covered Evidence-Based Research for Protein Intake<\/a> in a previous article. <\/p>\n\n\n\n
Age<\/h3>\n\n\n\n
As we age, our body\u2019s ability to absorb, digest, and utilize protein diminishes. The older we get, the more protein we need to maintain muscle mass, strength, and overall health.<\/span><\/p>\n\n\n\n
Sarcopenia, the age-related loss of muscle mass, is a common issue in older adults. This condition can lead to a decline in physical function, increased risk of falls, and overall decreased quality of life. Consuming enough protein can help slow down or even prevent muscle loss, so older adults need to consume enough protein.<\/span><\/p>\n\n\n\n
As we age, our appetite may decrease, making it harder to consume enough protein. For that reason, it’s important for older adults to choose nutrient-dense protein sources and to spread their protein intake throughout the day to ensure that they are getting enough.<\/p>\n\n\n\n
Gender<\/h3>\n\n\n\n
Men need more protein than women due to their larger muscle mass. Still, this depends on their lifestyle. <\/p>\n\n\n\n
For example, active women in regular resistance training may need more protein to support muscle growth and recovery than inactive men. Similarly, pregnant and breastfeeding women may need more protein to support the growth and development of the fetus or infant.<\/span><\/p>\n\n\n\n
Activity Level<\/h3>\n\n\n\n
Physical activity level plays a huge role in determining protein needs. If you\u2019re physically active, you\u2019ll have higher protein needs to support muscle repair and growth than someone with a sedentary lifestyle. <\/p>\n\n\n\n
For example, endurance athletes need more protein than others to support muscle repair and growth because of the constant wear and tear on their muscles during training and competition. Similarly, strength or resistance-trained athletes need extra protein to recover from training and maintain their muscle mass.<\/p>\n\n\n\n
It\u2019s worth noting that protein needs can also vary based on the type and intensity of the physical activity. A bodybuilder looking to gain a lot of muscle may require more protein than a runner looking to maintain muscle and support their body. <\/p>\n\n\n\n
Overall Health<\/h3>\n\n\n\n
Your body needs more than just protein to survive, and we require a diverse and balanced diet containing both macronutrients and micronutrients to stay healthy. Too much of anything is never good, and consuming too much protein can be hard for the body to metabolize and excrete. <\/p>\n\n\n\n
A high protein intake of up to 1 gram per pound of body weight (or 2.2 grams per kilogram) is generally safe. It\u2019s also often beneficial for maintaining muscles, improving satiety, controlling blood sugar, and helping with weight loss. The upper tolerable limit for protein intake is 3.5 grams per kilogram of body weight per day.<\/span> This is nearly impossible with a plant-based diet, though.<\/p>\n\n\n\n
There\u2019s no one-size-fits-all to this\u2014which is why the best thing is to work with a healthcare professional or a licensed dietitian if you can, especially if you have kidney issues. <\/p>\n\n\n\n
What\u2019s the Deal with Complete Protein?<\/h2>\n\n\n\n
Not all protein is created equal. Some proteins are better for you than others at helping you build muscles and supporting your other needs. So, you want to learn about protein quality and complete vs. incomplete proteins.<\/p>\n\n\n\n
When it comes to plant-based <\/a>proteins, some sources are considered complete proteins, and some are considered incomplete proteins. Technically, all of them are complete proteins, but some plant sources are low in certain amino acids.<\/p>\n\n\n\n
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A lot of proteins in your body contain all 20 essential amino acids. So, if you don\u2019t have all 20, your body won\u2019t be able to construct new proteins, including muscles. As a result, it will burn the other amino acids you have as energy instead of building new proteins.<\/span><\/span> This is why you want to complete or complement your proteins every single day.<\/p>\n\n\n\n
Here\u2019s the difference between the two:<\/p>\n\n\n\n
- Complete proteins<\/strong> contain all the essential amino acids your body needs but cannot produce independently. These include animal-based proteins and proteins in quinoa, soy, potatoes, chia, and hemp.<\/li>
- Incomplete proteins<\/strong> are low in one or more of the essential amino acids. For example, grains are low in lysine but high in cysteine and methionine. In comparison, legumes are high in lysine and low in cysteine and methionine. <\/li><\/ul>\n\n\n\n
Complementing your proteins is one way to ensure you get all the essential amino acids you need. You get all the essential amino acids (or complete proteins) by combining complementary incomplete proteins. For example: <\/p>\n\n\n\n
- Rice and beans<\/li>
- Peanut butter on whole-wheat<\/strong> bread<\/li>
- Hummus with pita bread<\/li>
- Lentils and rice<\/li>
- Tofu and whole-wheat pasta<\/li><\/ul>\n\n\n\n
Another approach is to consume single plant-based protein sources that are considered to be complete proteins, <\/strong>such as:<\/p>\n\n\n\n
- Quinoa<\/strong><\/li>
- Hemp seed<\/li>
- Chia seeds<\/strong><\/li>
- Spirulina<\/li>
- Pumpkin seeds<\/strong><\/li><\/ul>\n\n\n\n
Sometimes it\u2019s impossible to complement all your proteins in a single meal. Generally, you want to complement your proteins in 24 hours so your body can use the amino acids you eat as building blocks.<\/p>\n\n\n\n
Aside from completeness and quantity, protein quality also matters. A protein is high-quality when your body can use it easily. <\/p>\n\n\n\n
What is Protein Quality?<\/h2>\n\n\n\n
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<\/figure>\n\n\n\nProtein quality refers to how effectively a protein supports the body\u2019s growth and maintenance. The quality of a protein is determined by its amino acid profile, digestibility, and bioavailability.<\/p>\n\n\n\n
- The amino acid profile<\/strong> is the proportion of essential amino acids in a protein.<\/li>
- Digestibility refers<\/strong> is how easily your body can digest the protein<\/li>
- Bioavailability<\/strong> refers to how well your body can absorb and use the amino acids<\/li><\/ul>\n\n\n\n
Protein quality is especially important for people who want to build muscle, recover from injury or illness, or maintain a healthy weight. Also, vegetarians or vegans may consume various protein sources to get all the essential amino acids. Generally, plant-based proteins are lower quality because they are less complete and harder to digest.<\/strong><\/p>\n\n\n\n
The most widely used methods to measure protein quality include:<\/p>\n\n\n\n
- Protein Digestibility Corrected Amino Acid Score (PDCAAS) <\/li>
- The Digestible Indispensable Amino Acid Score (DIAAS)<\/li><\/ul>\n\n\n\n
The Food and Agriculture Organization (FAO) and World Health Organization (WHO) developed these two methods to evaluate protein quality in food. DIAAS is considered more accurate than PDCAAS.<\/span><\/p>\n\n\n\n
PDCAAS<\/h3>\n\n\n\n
PDCAAS compares the amino acid requirements of humans to the amino acid composition of a protein, and assigns a score of 0 to 1. The highest score of 1 means that the protein is considered high quality, as it contains all of the essential amino acids in the correct ratio and in sufficient amounts to meet human needs.<\/span><\/p>\n\n\n\n
DIAAS<\/h3>\n\n\n\n
DIAAS, a more recent approach, is an improvement over the PDCAAS. It takes into account the bioavailability of amino acids, the digestibility of the protein source, and its essential amino acids profile. If protein food scores are high on DIAAS, close to 100% of its indispensable amino acids are digested and absorbed. It means the protein food has very high protein quality.<\/span> <\/p>\n\n\n\n
Problems with Soy as a Plant-Based Protein Food<\/h2>\n\n\n\n
![\"Soy](\"https:\/\/bioptimizers.com\/blog\/wp-content\/uploads\/2023\/01\/3-1024x683.jpg\")
<\/figure>\n\n\n\nSoy is a complete and bioavailable plant-based protein source with numerous health benefits. However, soy is also high in goitrogens and phytoestrogens.<\/span> So, it may be best to limit soy products to 3 servings per week.<\/p>\n\n\n\n
Phytoestrogens are plant compounds that mimic the effects of estrogen in the body. In excessive amounts, phytoestrogens may interfere with estrogen functions and may have negative effects on certain health conditions.<\/span> <\/p>\n\n\n\n
Some men who rely on soy as a protein source report developing symptoms of high estrogen levels, such as man boobs. However, studies do not confirm this.<\/span><\/p>\n\n\n\n
Goitrogens are substances that interfere with your thyroid function and inhibit iodine uptake.<\/span> This can be an issue for people with thyroid problems but not necessarily for healthy people who consume moderate amounts of soy. Fortunately, the fermentation process may break down many of these goitrogens.<\/p>\n\n\n\n
It’s worth noting that traditional soy-based foods like tofu, tempeh, and miso may be more healthful options than heavily processed soy products like soy protein isolate or textured vegetable proteins. <\/p>\n\n\n\n
Final Thoughts<\/h2>\n\n\n\n
You can get enough protein on a plant-based diet, but it requires a bit of planning, food preparation, and a variety of different sources. You want to focus on complete proteins and also be sure to complement your proteins.<\/p>\n\n\n\n
It\u2019s helpful to have a backup source of protein, such as Protein Breakthrough<\/a>, which can help you reach your essential amino acids and protein needs for the day (and is also a tasty drink in-between meals).\u00a0<\/p>\n\n\n\n
If you\u2019re concerned about digestive issues, check out Constipation From Protein Shakes and How to Avoid It<\/a>.<\/p>\n\n\n\n
Also, high-quality plant-based protein-digesting enzymes like MassZymes<\/a> and VegZymes<\/a> can help you better digest and absorb your amino acids, even with lower-quality and harder-to-digest plant proteins. These enzymes allow our cofounder Wade T. Lightheart to build enough muscles to compete in Mr. Universe while eating 80 grams of proteins a day.<\/p>\n\n\n\n
<\/p>\n\n\n\n
Whether you’re working on building muscle mass or supporting your cognitive functioning, there are plenty of options available to support a healthy, plant-based diet.<\/p>\n\n\n
- Digestibility refers<\/strong> is how easily your body can digest the protein<\/li>
- Incomplete proteins<\/strong> are low in one or more of the essential amino acids. For example, grains are low in lysine but high in cysteine and methionine. In comparison, legumes are high in lysine and low in cysteine and methionine. <\/li><\/ul>\n\n\n\n
- Complete proteins<\/strong> contain all the essential amino acids your body needs but cannot produce independently. These include animal-based proteins and proteins in quinoa, soy, potatoes, chia, and hemp.<\/li>
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