What a scoop of powder is really for

Protein powder is food. Specifically, it’s dried dairy or plant protein, sold at a markup for convenience. That’s the entire product. It isn’t a scam and it isn’t a shortcut.

The legitimate use case

Powder is useful when you have a protein target you’re struggling to hit and a schedule that keeps you away from kitchens. That’s it. If you can reach your number with food you enjoy, powder adds nothing but cost.

Where it’s genuinely handy: a morning you can’t face cooking, a long commute, or the hour after training when you’re not hungry but you have a target to hit.

Reading the label

Turn the tub around and look for two things.

Protein per 100 grams. Anything above 70 grams is a reasonably pure product. Anything much below suggests you’re mostly buying sugars, thickeners, or filler.

The cost per 100 grams of actual protein. Divide the price by the protein content, not by the tub weight. This single calculation eliminates most of the market, because the expensive tubs are usually expensive for reasons that have nothing to do with the protein.

What the additives do

Isolate versus concentrate matters if you’re sensitive to lactose and is otherwise a rounding error. Added digestive enzymes do very little. Added amino acids are usually there to inflate the nitrogen reading rather than to help you, a practice with a name - amino spiking - and a long history.

The bars

Protein bars are confectionery with a protein claim. Some are fine. Almost all are more expensive per gram than a tin of sardines and less satiating than an egg.

Ask of any supplement: what does this do that food and sleep don’t? For protein powder, the honest answer is “it fits in a bag”, and that is occasionally worth paying for.