No, muscle gain needs amino acids from food; without them, synthesis can’t beat breakdown.

Yes, too much protein can backfire; most adults do well at 10–35% of calories and under about 2 g/kg unless advised otherwise.

No, building muscle without protein isn’t possible; muscle tissue needs amino acids from protein to repair and grow.

Protein intake alone rarely changes menstrual cycles; low energy intake and health issues are the usual triggers.

Yes, protein deficiency can contribute to nausea through unstable blood sugar, slower stomach emptying, and illness-related undernourishment.

Yes, people can react to specific food proteins; the condition is uncommon, varies by source, and needs diagnosis by an allergy specialist.

No, protein shortfall alone isn’t a proven cause of insomnia; low intake can relate to poorer sleep quality for some people.

Yes, protein deficiency can disrupt hormone balance by altering thyroid, reproductive, stress, and appetite signals.

Yes, protein deficiency can contribute to memory issues, though most cases involve multiple nutrition and health factors together.

Protein deficiency can contribute to leg cramps, but cramps often stem from hydration, electrolytes, overuse, or medicines.