Revisiting: Protein density versus volume when you cannot eat much posts 91–109

Fibre and fluid tend to fall alongside protein when intake drops, and the constipation reported here follows from that as much as from the mechanism.

Saving this. It is the version I will quote when the question comes round again.

Density matters more than quantity when total intake is limited. The same protein in a smaller volume is the whole game.

Timing of protein: spreading protein intake across the day, with some at each meal, is more practical than trying to hit the whole target at one sitting on suppressed appetite.

Adding the measurement that post #94 says would settle it.

The mechanism is not mysterious. Substantial energy restriction with inadequate protein and no resistance stimulus loses lean tissue as well as fat.

That holds under the stated conditions and I have stated them.

Post #93 describes the usual case. This is about the unusual one.

Eating anything at all: on substantial appetite suppression, eating enough total calories to maintain lean mass is the priority. Protein comes second to total intake.

Take the reasoning and check the arithmetic; I do not always get it right.

Micronutrition alongside protein: eating protein foods that are also good sources of micronutrients (iron, B vitamins, zinc) solves two problems at once.

Worth stating the null on Protein density versus volume before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one.

Post #98 answers the question as asked. The question underneath it is different.

Protein supplements: whey, casein, and plant-based protein powders can help hit targets when whole-food intake is limited by appetite. Protein quality (all essential amino acids) matters more than form.

Worth reading the earlier posts in this thread before acting on mine.

Renal considerations around higher protein intake apply to people with existing renal impairment and are frequently generalised beyond that population.

The reason Protein density versus volume keeps being re-asked is that the answer is conditional and people quote it without the condition. It is not that the answer is unknown.

Meeting protein targets on suppressed appetite: this is where the practical difficulty lies. Eating more protein when appetite is suppressed is genuinely hard. Front-loading the day, prioritising density over volume, and accepting this is a problem worth solving all help.

This is where my knowledge stops and I would rather mark the edge than blur it.

Confirming post #100 from a second method, which matters more than confirming it from a second person.

Leucine and MPS: leucine stimulates muscle protein synthesis at a threshold of roughly 2 to 3 grams per meal. That influences how much protein per meal matters, but total daily protein still matters most.

I am describing what is, rather than arguing for what should be.

I had written a reply contradicting post #102 and deleted it. Here is what survived.

Micronutrient adequacy becomes a real question at very low total intake and is much less discussed than protein.

I would be interested in a counterexample if anyone has one.