A scoop of protein powder next to a glass of milk

Protein for beginners

A protein powder is a concentrated food. It is not a meal, and it is not a medicine.

A powder is still a food

Protein powder is a concentrated food: milk protein, or collagen, dried and portioned. It is not a meal, because a meal also brings carbohydrate, fat, fibre, and the vitamins that travel with ordinary food. It is not a medicine. Using it as the only food at breakfast is a choice about the rest of the diet, not a property of the tub.

Whey and casein are milk proteins. They are complete proteins: they contain the essential amino acids in useful amounts, including leucine, and they contain tryptophan. Collagen is a structural protein, usually from bovine hide or from fish skin. Collagen is very low in tryptophan and is not the same amino-acid pattern as whey. The two powders are not substitutes for each other.

Grams of protein, and the energy rule

The label states grams of protein per portion and the energy of that portion. Under Regulation (EC) No 1924/2006 a food may be called a source of protein only when at least 12% of its energy comes from protein. It may be called high in protein only when at least 20% of its energy comes from protein. A shake mixed with juice or milk has a different percentage from the dry powder, because you added energy.

Authorised claims under Regulation (EU) No 432/2012 say that protein contributes to a growth in muscle mass and to the maintenance of muscle mass and of normal bones. Those sentences are allowed when the product meets the source-of-protein condition. They describe the nutrient. They do not say that a beginner will gain a stated amount of muscle, or that collagen will do what whey does.

Beginners, portions, and what not to expect

EFSA’s dietary reference value for protein in adults is 0.83 g per kilogram of body weight per day, as an average requirement for the population (EFSA Journal 2012;10(2):2557). Training can raise what a person chooses to eat. A scoop does not replace the arithmetic. If one portion is 20 g of protein, the rest of the day still has to be counted.

The collagen and protein category on NovaLixir lists the powders we actually sell. Read whether the ingredient is whey, casein, a blend, or collagen, then read grams of protein and kilocalories per portion so the 12% test can be done. Do not exceed a dose the label states. Food supplements do not replace a varied diet or a healthy lifestyle.

A simple check: multiply grams of protein by 4 to get kilocalories from protein, then divide by the portion’s total kilocalories. At 12% the product may be called a source of protein and may use the authorised muscle and bone sentences. At 20% it may be called high in protein. Adding a banana or a large glass of juice to the shake lowers the percentage, because those foods add energy that is not protein.

Beginners often ask whether one scoop after training is enough for the whole day. It is one portion, not the day. The EFSA figure of 0.83 g per kilogram is an average requirement, not a target printed on a tub and not a promise of a physique. Spread protein across meals if that suits the rest of what you eat. Collagen can sit in the same cupboard as whey, but the ingredient line should stay visible so the two are not mixed up.

Questions

Is collagen a complete protein?

No. Collagen is short of tryptophan and is not interchangeable with whey or casein. It is still a protein and can contribute grams of protein, but it does not supply the same essential amino acids.

When can the muscle claim be used?

When protein supplies at least 12% of the food’s energy, the authorised wording may say that protein contributes to a growth in muscle mass and to the maintenance of muscle mass. The claim is about the nutrient, not a measured training result.

Does a protein powder count as a meal?

It counts as a concentrated source of protein. A meal usually includes more than one macronutrient and the foods that carry them. Calling the powder a meal overstates what is in the tub.

What about an unopened tub?

Sealed food supplements can be returned only while they remain unopened. After the seal is removed they are excluded from withdrawal for health and hygiene reasons.

Sources

Food supplements do not replace a varied diet and a healthy lifestyle.

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