Biotic's Gain

Yes — a vegetarian diet can meet an adult’s protein needs comfortably, and for most people it already does without any special effort. The UK reference intake is around 0.75g of protein per kilogram of body weight a day, roughly 45g for a 60kg woman and 56g for a 75kg man, and dairy, eggs, pulses, soya, nuts and grains supply that between them without much planning. What is worth thinking about is not the daily total but the spread and the variety: some protein at every meal rather than all of it at dinner, and a mix of plant sources across the week. A vegan diet takes more attention than a vegetarian one, largely because dairy and eggs quietly do a lot of the work.

What the daily target actually is

The UK reference nutrient intake for protein is 0.75g per kilogram of body weight a day for adults. For a 60kg woman that works out at about 45g, and for a 75kg man about 56g. That figure is a population reference rather than a personal prescription — it is set high enough to cover almost everybody, not to describe an ideal.

People who train against resistance several times a week, older adults trying to hold onto the muscle they have, and anyone eating in a deliberate calorie deficit are usually advised to aim higher, commonly between 1.2g and 1.6g per kilogram. None of that changes because meat is off the menu: the target is the target, and only the shopping list differs. We have written about where those numbers come from in how much protein you actually need in a day.

Where the protein in a vegetarian diet comes from

The figures surprise people who assume meat is the only serious source. A 200g pot of Greek yoghurt carries around 20g of protein. Two eggs are about 13g. A 100g block of paneer or halloumi sits in the low twenties. A drained tin of chickpeas is roughly 18g, 150g of cooked lentils about 9g, 100g of firm tofu around 15g and the same weight of tempeh closer to 19g. Thirty grams of cheddar is about 8g, and so is a generous tablespoon of peanut butter. Even the quiet contributors add up: 60g of dry oats is 8g, two slices of wholemeal bread about 7g.

Put an ordinary, unambitious vegetarian day together — porridge, a cheese sandwich, a lentil curry with rice, a yoghurt — and you are into the high fifties before you have made any effort at all. The honest conclusion is that the shortfall most people imagine is usually not there.

The amino acid question, honestly

Protein is a long chain of amino acids, nine of which the body cannot build for itself and has to get from food. The old shorthand that divides foods into “complete” and “incomplete” proteins is a crude label. Most plant proteins contain all nine, just in uneven proportions: pulses tend to run low on methionine, cereals low on lysine. Eat both across a day and the gaps fill in.

The 1970s advice to pair complementary proteins in the same meal — beans with rice, hummus with pitta — was quietly dropped once it became clear the body keeps a free pool of amino acids to draw on, so the matching happens over hours rather than mouthfuls. Soya is well balanced on its own, and so are dairy and eggs.

Does plant protein count for less?

Slightly, and it is worth being straight about it. Animal proteins are typically digested and absorbed at something like 90 to 95 per cent efficiency, while whole pulses and grains come in lower, often in the 70s and 80s, partly because of fibre and partly because of compounds that interfere with digestion. Soaking, cooking and processing push that figure up — tofu is more digestible than the whole soya bean it came from. In practice the effect is modest, and the sensible response is to aim a little above the bare reference intake rather than to treat it as a worry.

Spread matters more than the total

This is where vegetarian diets genuinely do slip, and it has nothing to do with meat. Most British eating patterns put almost nothing at breakfast, a modest amount at lunch and the bulk of the day’s protein at dinner. Muscle responds to a meal-sized serving rather than to a daily running total, so three or four moderate servings spread out do more than one large one at eight in the evening.

Fixing it is unglamorous: yoghurt or eggs at breakfast instead of toast and jam, pulses or tofu in the lunchbox rather than a sandwich alone. That one change moves most people from “probably fine” to “comfortably covered”.

Vegan is a different problem from vegetarian

Take away dairy and eggs and a good deal of the easy protein goes with them. A vegan diet leans much harder on soya in its various forms, pulses, seitan, nuts, seeds and fortified foods, and the spread question becomes correspondingly more important. Vitamin B12 is also not reliably available from plant foods, which is why fortified foods and a supplement are standard advice for anyone eating entirely plant-based — a point about dietary practice rather than anything we are permitted to make a claim about.

What the authorised claims are allowed to say

Great Britain works from a closed register of authorised nutrition and health claims. If wording is not on it, nobody may use it, however reasonable it sounds. For protein the authorised claims are:

• “Protein contributes to a growth in muscle mass”
• “Protein contributes to the maintenance of muscle mass”
• “Protein contributes to the maintenance of normal bones”
• “Protein is needed for normal growth and development of bone in children”

Those claims belong to the nutrient, not to any brand or format. A food may carry them only if it qualifies as at least a source of protein, meaning at least 12 per cent of its energy comes from protein; the stronger “high protein” nutrition claim needs 20 per cent. A tin of lentils and a tub of powder stand on exactly the same four sentences. The word “normal” can never be dropped or traded up for “improved”, and no supplement may be presented as treating, preventing or curing anything.

Two further points, because they bear directly on this subject. There is no authorised claim that ranks plant protein against animal protein, in either direction, so anyone telling you one is nutritionally superior is advertising rather than quoting the register. And there is no authorised whey-specific claim either — a long list of proposed ones was rejected, which is why whey rides on the generic protein wording above. We only quote claim wording we have checked against the Great Britain register ourselves, which is why you will not see us attach a claim to B12, iron or zinc here.

Where the Whey Protein Isolate sits

Whey is a dairy protein, so it is vegetarian but not vegan — worth saying plainly, because it is the question we are asked most often about it. The Biotic’s Gain Whey Protein Isolate comes in a 2lb tub with 25g of protein and 5.5g of BCAAs per serving, across six flavours, and it is filtered further than a concentrate, which leaves it lower in fat and lactose. We have written separately about what isolate actually changes where lactose is concerned.

That is a description of the ingredient rather than a promise about it. A powder is a convenience for the days when breakfast is rushed — not a requirement, and not a shortcut past a varied diet. Can you get enough protein without a shake? goes through that argument, and the protein guide gathers the numbers in one place.

If you want to check your own intake

Keep a rough note for three ordinary days — not a perfect week, an ordinary one. Write down the protein-carrying items at each meal, add the approximate figures above, and compare the total against 0.75g per kilogram of your body weight. Most people find they are already over it and simply bunching everything into the evening, which is a timing fix rather than a dietary overhaul.

Biotic’s Gain products are food supplements. A food supplement is not a substitute for a varied and balanced diet or a healthy lifestyle, and should not be presented as treating, preventing or curing any condition. Do not exceed the stated dose. If you are pregnant or breastfeeding, taking medication or under medical supervision, speak to your doctor or pharmacist before starting anything new.