The Claim

In adults aged 65 and older, consuming 162 grams per day of minimally processed pork or 332 grams per day of lentils within a plant-forward diet for 8 weeks increases circulating levels of GABA, tryptophan, phenylalanine, and glycine.

Source: Effects of Minimally Processed Red Meat within a Plant-Forward Diet on Biomarkers of Physical and Cognitive Aging: A Randomized Controlled Crossover Feeding Trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
78score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

In adults aged 65 and older, eating 162 grams of minimally processed pork or 332 grams of lentils daily for 8 weeks within a plant-forward diet raises blood levels of GABA, tryptophan, phenylalanine, and glycine.

See the scientific wording

In adults aged 65 and older, consuming 162 grams per day of minimally processed pork or 332 grams per day of lentils within a plant-forward diet for 8 weeks increases circulating levels of GABA, tryptophan, phenylalanine, and glycine, suggesting that both dietary patterns may support neurochemical pathways linked to mood and cognitive regulation.

Why this might work

Eating pork or lentils increases specific amino acids in the blood, which the body uses to make brain chemicals like GABA and serotonin. More of these amino acids reduce overactive brain signals and boost calming signals, improving brain function.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Effects of Minimally Processed Red Meat within a Plant-Forward Diet on Biomarkers of Physical and Cognitive Aging: A Randomized Controlled Crossover Feeding Trial

    In older adults, eating either lean pork or lentils as part of a healthy, plant-based diet raised levels of brain-friendly chemicals like GABA and tryptophan, which may help with mood and thinking. The study found this to be true for both foods.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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