Protein does more than build muscle
Protein has been marketed almost exclusively at people lifting weights for about thirty years. That is a narrow reading of what it does.
What the authorised claims say
In the UK and EU, the health claims a food can make are tightly controlled. For protein, three are authorised:
- Protein contributes to a growth in muscle mass
- Protein contributes to the maintenance of muscle mass
- Protein contributes to the maintenance of normal bones
The third one is the least discussed and arguably the most relevant to most people. Bone is not just mineral — roughly a third of bone mass by weight is collagen, which is protein. Adequate protein intake matters for skeletal maintenance across a lifetime, not just for people training.
Beyond the authorised claims
Protein is the raw material for enzymes, for antibodies, for the transport molecules that move things around your bloodstream, and for the structural tissue in skin, hair and nails. Amino acids from dietary protein are the input for all of it.
We are careful here: none of that is an authorised health claim, and we are not making one. It is basic physiology rather than a benefit we are selling you.
Where the vitamins and minerals come in
Protein is not the only thing a plant-based diet needs watching. Four nutrients come up repeatedly: vitamin B12, iron, iodine and vitamin D. Our Core powder includes all four at 100% of the Nutrient Reference Value per serving, alongside seventeen more.
The authorised claims for those are:
- Vitamin B12 contributes to the reduction of tiredness and fatigue
- Iron contributes to normal oxygen transport in the body
- Vitamin D contributes to the normal function of the immune system
- Iodine contributes to normal cognitive function
A protein powder is a convenient way to top up a diet. It is not a substitute for one, and anyone selling it as one is overreaching.
Appetite and satiety
Protein is generally the most satiating of the three macronutrients, which is why higher-protein meals tend to leave people fuller for longer. That is well documented in the nutrition literature, and it is a useful thing to know if you are managing your intake.
A note on how much
More protein is not indefinitely better. Once you have met your requirement, additional protein is used for energy like anything else. If you are unsure what your requirement is, our piece on how much protein you actually need works through it.
This article is general information about nutrition. It is not medical or dietary advice, and it is not a health claim for any FitBee product. If you have a specific health question, ask a GP or a registered dietitian.