Brenda Khan
A pure protein diet is a high-protein, low-carb diet that is often associated with weight loss. It involves eating lean protein sources, such as chicken, fish, eggs, and soy, alongside fat-free or low-fat dairy products and non-starchy vegetables. While this diet can lead to quick weight loss, it may not be sustainable or healthy in the long term due to its restrictive nature and potential health risks. It is always advisable to consult a healthcare professional before starting any new diet, especially those that restrict certain food groups.
| Characteristics | Values |
|---|---|
| Purpose | Weight loss |
| How it works | Reducing calories and increasing protein intake to reduce the buildup of harmful fats in the body |
| Food sources | Lean meats, fish, chicken, eggs, soy, cottage cheese, fat-free dairy, beans, nuts, grains, seafood, cheese, vegetables |
| Risks | Nutritionally incomplete, may lead to bad breath, headaches, constipation, heart disease, high cholesterol, kidney problems |
| Recommended intake | 90g protein, 30g fiber, and 50g healthy fats daily |
| Other recommendations | Drink plenty of water, exercise regularly, take multivitamins |
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What You'll Learn
Lean meats are a good source of pure protein
Lean meats are indeed a good source of pure protein. They are also a source of important nutrients like iron and zinc. Lean meats include skinless poultry, such as chicken and turkey, as well as cuts of red meat like loin and round. Lean beef, for instance, has about 164 calories, 22.3 g of protein, 3.1 g of saturated fat, and 7.6 g of total fat per 3 oz serving.
Turkey, especially the breast, is a great source of lean protein. A 3-oz serving of roasted, skinless turkey breast contains about 26 g of protein and 125 calories. Turkey is also a good source of B vitamins, selenium, zinc, phosphorus, and niacin. It also contains high amounts of tryptophan, an amino acid that helps synthesize serotonin, an important neurotransmitter.
Chicken is another excellent source of lean protein, especially if you opt for skinless breasts, which are low in fat. A 3.5-oz serving of cooked chicken breast has around 21 g of protein and about 2.7 g of fat. Chicken is also a great source of niacin, vitamin B6, selenium, and phosphorus.
Pork can also be a good source of lean protein if you choose the right cuts. Look for the words "loin" or "chop" in the name, such as tenderloin, top loin, rib chops, or sirloin steak. Pork is rich in B vitamins, selenium, and zinc.
In addition to lean meats, there are also other good sources of pure protein, including fish, eggs, dairy products, beans, and plant-based sources like tofu, soy, and quinoa.
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Fish and seafood are low-fat, high-protein foods
Fish and seafood are excellent additions to a pure protein diet. They are not only low in fat but also high in protein and other essential nutrients. For instance, a 3-oz (85-g) serving of cooked shrimp contains 19 g of protein and only 101 calories. Shrimp is also rich in selenium, choline, and vitamin B12, as well as niacin, zinc, vitamin E, and vitamin B6. Similarly, a 3-ounce cooked serving of snapper contains 22.4 grams of protein, 109 calories, and only 1.5 grams of fat. It is also a good source of vitamin A, selenium, omega-3 fatty acids, choline, and potassium.
Tuna is another popular choice for those on a pure protein diet. It is very low in calories and fat, making it an almost pure protein food. Canned light tuna in water contains 27 grams of protein and only 1.3 grams of fat per 5-ounce can. However, it is important to limit your consumption of tuna due to its high mercury levels. If you are looking for a low-mercury alternative, trout is a delicious and colourful fish that is commonly found in North America and Europe. It is relatively low in fat and contains 26.6 grams of protein per serving, along with vitamins B3, B5, B6, and B12, and omega-3 fatty acids.
If you are feeling adventurous, octopus is an unusual but protein-rich option, offering 29.8 grams of protein per serving. It is also rich in calcium, magnesium, and potassium. For a more affordable option, canned anchovies are very cheap and provide 28.9 grams of protein per 100 grams. They are also a good source of omega-3 fatty acids, but it is important to monitor your sodium intake when consuming anchovies.
In addition to these options, other types of fish and seafood that are high in protein include grouper, sea bass, tilapia, mackerel, and sardines. By incorporating a variety of these low-fat, high-protein fish and seafood into your diet, you can not only meet your protein requirements but also benefit from the numerous vitamins and minerals they provide.
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Poultry is a good option, but avoid the skin
A pure protein diet is a high-protein diet that restricts carbohydrates. This type of diet can lead to ketosis, which may aid weight loss as the body burns more fat for fuel.
Poultry is a recommended part of a pure protein diet, but it is important to avoid the skin. Chicken and turkey are lean meats and excellent sources of high-quality protein. Chicken is one of the most commonly consumed high-protein foods, and a 3-ounce serving of roasted skinless chicken breast will provide about 27 grams of protein and only 140 calories. The breast is the leanest part of the bird. Turkey is also a low-fat source of protein, and a 3-ounce serving of roasted skinless turkey breast contains about 26 grams of protein and 125 calories.
The skin of the bird, however, contains saturated fat. Chicken skin is high in protein and contains almost no carbohydrates, but it is best avoided due to its fat content. While some sources claim that chicken skin contains no fat or cholesterol, others state that the cooking process can lead to the formation of unhealthy trans fats. Therefore, it is generally recommended to remove the skin and opt for skinless chicken breasts when following a pure protein diet.
In addition to poultry, other good sources of protein for a pure protein diet include fish, eggs, lean beef, pork, and plant-based sources such as tofu, soy burgers, beans, and quinoa.
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Plant-based proteins include tofu, beans, and soy
A pure protein diet involves eating foods that are almost entirely composed of protein and water. While animal proteins have traditionally been the primary source of dietary protein, there has been a shift towards plant-based proteins in recent years. Plant-based proteins include tofu, beans, and soy.
Tofu, tempeh, and edamame are all made from soybeans and are excellent plant-based sources of complete protein. Soybeans are considered a whole source of protein, meaning they provide the body with all the essential amino acids it needs. Tofu is made from bean curds pressed together in a process similar to cheesemaking. It is versatile and easily absorbs the flavours of the ingredients it is prepared with. Tempeh is made by cooking and slightly fermenting mature soybeans and then pressing them into a patty. It is chewier and nuttier than tofu and provides a good source of fibre and iron, as well as calcium and 10 to 19 grams of protein per 100 grams. Edamame are immature soybeans with a slightly sweet and grassy flavour. They are usually steamed or boiled and can be eaten on their own or added to soups, salads, or grain bowls.
Beans are another important source of plant-based protein. One and a quarter cups of beans have a similar amount of protein to 3 ounces of broiled steak. They are also high in fibre, which helps to lower LDL ("bad") cholesterol and keeps you feeling full for longer. Chickpeas, lentils, and peanuts are also good plant-based sources of protein and can be added to salads, soups, or grain bowls.
Soy milk and other soy-based products are also popular plant-based sources of protein. Soy milk is found in most grocery stores and is incredibly versatile, working well in a variety of cooking and baking recipes. It is also a good source of calcium, vitamin D, and vitamin B12. Eating 25 grams of soy protein daily may help lower cholesterol.
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Dairy products such as milk, cheese, and yoghurt provide protein and calcium
Dairy products such as milk, cheese, and yoghurt are a great way to get protein and calcium. Calcium is a nutrient of public health concern and is commonly associated with dairy foods. Dairy products are the main source of calcium in many diets, and calcium is used for building and maintaining strong bones and teeth. Dairy products also provide potassium, vitamin D, and protein.
Milk is a great source of calcium, which is well absorbed by the body. One cup (237 mL) of milk provides 24–25% of the recommended daily value for this mineral. Milk is also a good source of protein, vitamin A, and vitamin D. Goat's milk is another excellent source of calcium, providing 327 mg per cup.
Cheese also delivers protein. For example, cottage cheese has 23 grams of protein per cup. Parmesan cheese packs 19% of the daily value for calcium, while other types like Brie deliver around 4%. Yoghurt is also an excellent source of calcium. One cup (245 grams) of plain yoghurt contains 23% of the daily value for calcium, as well as a hearty dose of phosphorus, potassium, and vitamins B2 and B12. Greek yoghurt is a great way to get extra protein in your diet, although it delivers less calcium than regular yoghurt.
Fortified soy milk and yoghurt with added calcium, vitamin A, and vitamin D are also part of the Dairy Group, as their nutrition content is similar to dairy milk and yoghurt. However, other plant-based "milks" such as almond, rice, coconut, oat, and hemp are not considered part of the Dairy Group because their nutrition content differs significantly from dairy milk and fortified soy milk.
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Frequently asked questions
A pure protein diet is a high-protein, low-carb diet that allows a list of 100 food items. It may lead to weight loss, but there are health risks.
Lean beef, fish, chicken, eggs, soy, cottage cheese, and fat-free dairy are all examples of pure protein foods.
A pure protein diet may help with weight loss by making you feel fuller. It can also help reduce the buildup of harmful fats in your body, especially around your abdomen.
Yes, a pure protein diet may not be safe if followed for too long, and it may not be safe for individuals with certain health issues. It is important to talk to your doctor before starting any new diet.
While some pure protein diets allow for unlimited amounts of low-fat proteins and non-starchy vegetables, it is important to remember that not all high-protein foods are created equal. It is always best to choose nutritious foods and monitor your portion sizes.
