← All episodes Episode 75 · Sleep, Recovery & the Body

Why Food Can Change Your Focus

Neuro-Nutrition: Proteins

When focus drops between meals, it is not always a character flaw. Your brain is a living organ, and it needs raw materials.

The Science

Fernstrom (2005), The Journal of Nutrition: amino acids from protein are the precursors the brain uses to build neurotransmitters.
Tyrosine is the precursor for dopamine and tryptophan for serotonin, so raw materials matter.
It does not mean protein instantly fixes mood; the brain simply cannot build signals from nothing.
If a meal is mostly sugar and air, the system may feel uneven later.

Build a steadier plate: add a protein you can actually eat.
Eggs, yogurt, beans, nuts, tofu, fish, or meat all work.
Pair it with fiber, water, and enough total food.
Watch the practical test: does energy feel steadier two hours later? If not, do not shame yourself.

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Fernstrom JD. Branched-chain amino acids and brain function. The Journal of Nutrition. 2005;135(6):1539S-1546S.

Educational content only. Not medical advice.

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