Protein and mood: Can eating more protein improve mood?

A nutritionist in the article explains that protein supplies amino acids used to make neurotransmitters such as serotonin and dopamine, and researchers say evidence directly linking increased protein to improved mood is still evolving.

A personal trainer and a nutritional therapist examine whether higher protein intake could affect mood. Protein is a macronutrient composed of amino acids and is involved in muscle repair, hormone regulation, and neurotransmitter production. Nutritionist Kerry Beeson explains that some amino acids from dietary protein are precursors for neurotransmitters tied to emotion and sleep. The article notes that research on protein's direct impact on mood is still developing. Key points: - Protein is made of amino acids that the body uses for muscle, tissues, hormones, and neurotransmitters. - Certain essential amino acids, including phenylalanine and tryptophan, are dietary precursors to dopamine and serotonin, respectively. - The gut is a major site of serotonin production, so diet and gut health may influence emotional regulation. - Protein digests more slowly than refined carbohydrates and can help moderate blood sugar spikes and dips for some people. - As a general guide quoted in the article, a protein expert recommends about 1.6–1.8 grams per kilogram of body weight for many people, but individual needs vary. - Researchers and nutritionists say evidence directly tying increased protein intake to improved mood in trials is limited and still evolving. Summary: Biological mechanisms described in the article — amino acids for neurotransmitters and slower digestion that helps stabilise blood sugar — could plausibly link protein intake to mood for some people, but current research does not establish a clear causal effect. Undetermined at this time.