How Much Protein Do You Actually Need? The Evidence, in Grams

Ask how much protein you need and you will usually be given 0.8 grams per kilogram of bodyweight. That figure is real. It is also the wrong number for almost anyone reading this.

It was set as the amount that prevents deficiency in a sedentary adult. It was never meant to describe what builds or keeps muscle in someone who trains, and the research on that question points noticeably higher.

Where the 0.8 figure comes from

The Recommended Dietary Allowance is built from nitrogen balance studies: the intake at which a healthy, inactive person takes in as much protein as they lose. Clear that bar and you are not deficient.

Not deficient is a low bar. It says nothing about recovery from training, about holding muscle in a calorie deficit, or about what happens to lean mass as you age. For all three, more helps, up to a point.

What the research supports for people who train

The most cited analysis is a 2018 meta-analysis by Morton and colleagues in the British Journal of Sports Medicine, pooling 49 trials of protein supplementation alongside resistance training. Gains in lean mass rose with protein intake and then flattened at around 1.6 grams per kilogram per day. The upper confidence limit sat around 2.2 g/kg, which is why that number is often given as a sensible ceiling for people who want to be sure.

How much you need depends on where you are:

• Sedentary, avoiding deficiency — 0.8 g/kg
• Training, maintaining or building — 1.6 to 2.2 g/kg
• Training in a calorie deficit — 2.0 to 2.4 g/kg
• Older adults who train — toward the upper end of that range

For a 75 kg man who lifts, that is roughly 120 to 165 grams a day. Most people who believe they eat a lot of protein land well below that once they actually add it up.

Why the deficit changes things

When you eat less than you burn, the body looks for energy, and muscle is one of the places it finds it. Higher protein intakes during a diet consistently preserve more lean mass. A review by Helms and colleagues suggested intakes well above maintenance levels for lean athletes dieting hard, calculated against lean mass rather than total weight.

This is the single most useful change most people can make during a cut. Calories fall. Protein should not.

If you carry extra body fat

Grams per kilogram assumes a reasonably lean person. At 110 kg and 35 percent body fat, multiplying total bodyweight by 2 gives a number that is both unnecessary and hard to eat. Use your goal weight, or your lean mass, instead. The protein calculator handles this adjustment and gives a target based on your actual composition rather than the scale.

Does it matter how you spread it?

Somewhat, and less than total intake. Muscle protein synthesis responds to each protein-containing meal, and there appears to be a useful amount per sitting. A practical guide from Schoenfeld and Aragon is around 0.4 g/kg per meal across at least four meals. For the 75 kg lifter, roughly 30 grams a sitting.

What matters more than precision is not loading everything into dinner. Tea and biscuits for breakfast followed by a large evening meal is a very common Indian pattern, and it wastes most of the day.

The Indian vegetarian problem

This is where targets meet reality. Typical Indian vegetarian meals are built around carbohydrate, with protein as a side. Realistic numbers, which vary with recipe and portion:

• Paneer, 100 g: around 18 to 20 g
• Cooked dal, one katori: around 7 to 9 g
• Curd, one katori: around 4 to 6 g
• Soya chunks, 50 g dry: around 25 g
• Milk, one glass: around 7 to 8 g
• Two eggs, for those who eat them: around 12 g

Hitting 130 grams from those foods alone is possible but takes planning. Three katoris of dal gets you about 25 grams, not the 60 people assume.

Plant proteins also carry less leucine per gram, the amino acid most associated with switching on muscle protein synthesis. Combining sources and eating somewhat more total protein makes up for it. The Indian diet planner builds a day from a household-measure food database, so you can see where your protein actually comes from in katoris and pieces rather than guessing.

Is high protein bad for your kidneys?

In healthy people, the evidence does not show harm at the intakes above. Kidney workload rises with protein intake, which is normal physiology rather than damage. People with existing kidney disease are a different case and should follow their nephrologist, because there protein intake is managed deliberately.

How to actually get there

• Set the number first. Grams per day, not a vague intention to eat more.
• Anchor every meal. Put a protein source on the plate before anything else.
• Fix breakfast. It is usually the emptiest meal of the day.
• Use a supplement only to close the gap. Whey or a plant protein is convenient, not magic. It earns its place when food falls short.
• Track for one week. Not forever. One honest week shows you where you really stand.

What 135 grams looks like on an Indian vegetarian day

Targets are easier to hit when you can see them on a plate. This is one way to reach roughly 135 grams without meat, using ordinary food. Figures are approximate and vary with recipe and portion.

• Breakfast — paneer bhurji, 100 g, with a glass of milk (about 26 g)
• Lunch — two katoris of dal, one of curd, with roti or rice (about 22 g)
• Snack — soya chunks, 50 g dry, cooked (about 25 g)
• Evening — a handful of roasted chana with buttermilk (about 11 g)
• Dinner — paneer tikka, 100 g, with a katori of dal (about 27 g)
• Anywhere — one scoop of whey or plant protein (about 24 g)

That lands around 135 grams. Without the scoop it is around 110, which is why many vegetarian lifters find a protein supplement genuinely useful rather than optional.

The short version

0.8 g/kg prevents deficiency. 1.6 g/kg is where most of the muscle-building benefit is captured, with 2.2 g/kg a safe ceiling. In a deficit, lean toward the top. If you carry a lot of body fat, calculate from goal weight.

Related tools

• Protein calculator: your daily target, adjusted for body composition
• Indian diet planner: protein across a real Indian food database
• Calorie and macro calculator: the rest of the plate

Related guides

• The Architect of Mass — Lean Bulk Mastery — a free guide on calories, macros and building muscle, where a protein target like this one fits into the wider plan

Frequently asked questions

How much protein do I need per day to build muscle?

Research pooled across dozens of trials shows muscle gain from protein flattening at around 1.6 grams per kilogram of bodyweight per day, with 2.2 g/kg a sensible upper target. For a 75 kg person that is roughly 120 to 165 grams daily.

Is 0.8 grams of protein per kg enough?

It prevents deficiency in a sedentary adult. It is not enough to maximise muscle gain or retention in someone who trains, especially during a calorie deficit.

Can you eat too much protein?

In healthy people, intakes up to around 2.2 g/kg and somewhat beyond have not shown harm. Past the point where muscle gain flattens, extra protein mainly adds calories. People with kidney disease should follow medical advice.

How can vegetarians get enough protein in India?

Combine paneer, soya, curd, dal, milk and legumes across every meal rather than relying on one source, and eat slightly more total protein to offset the lower leucine content of plant foods. A protein supplement can close a remaining gap.

Should I calculate protein from total weight or lean mass?

If you are reasonably lean, total bodyweight works. If you carry significant body fat, calculate from goal weight or lean mass, otherwise the target becomes unnecessarily high.

Does protein timing matter?

Less than total daily intake. Spreading protein across at least four meals of roughly 0.4 g/kg each is a reasonable approach, and moving protein away from one large evening meal is the most useful practical change.

This article is educational and is not medical advice. See the medical disclaimer.