Whey Protein
Whey protein is a mixture of some of the proteins naturally found in milk. The major proteins found in whey protein include beta-lactoglobulin and alpha-lactalbumin. Whey protein has one of the highest protein digestibility-corrected amino acid scores (PDCAAS; a measure of protein bioavailability) and is more rapidly digested than other proteins, such as casein (another milk protein). 1
- Reliable and relatively consistent scientific data showing a substantial health benefit.
- Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
- For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.
Our proprietary “Star-Rating” system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.
For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.
This supplement has been used in connection with the following health conditions:
| Used for | Amount | Why |
|---|---|---|
Obesity | Around 28 grams one to three times per day |  [3 stars] Whey protein may help people on weight-loss diets by suppressing appetite, increasing energy expenditure, and preserving muscle. |
Athletic Performance | 20 grams daily up to 1.2 grams of per 2.2 of pounds body weight per day |  [2 stars] Animal studies suggest that whey protein can increase gains in lean body mass resulting from exercise. One study found that people taking whey protein improved their performance on a test of short-term intense cycling exercise. |
Hepatitis | 3 to 4.5 grams twice per day |  [1 star] In one trial, supplementing with whey protein improved blood measures of liver dysfunction in people with hepatitis B. |
HIV and AIDS Support | Refer to label instructions | [1 star] Whey protein is rich in the amino acid cysteine, which the body uses to make glutathione, an important antioxidant. Supplementing with it may improve immune function. |
Immune Function | Refer to label instructions | [1 star] Whey protein appears to improve some aspects of immune function. One trial showed that whey protein increased blood glutathione levels in a group of HIV-infected people. |
Osteoporosis | Refer to label instructions | [1 star] Some whey proteins may reduce bone loss. Milk basic protein (MBP) is a mixture of some of the proteins found in whey protein and has been shown to promote bone density |
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The information presented by TraceGains is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2025.