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Two 2025 studies sharpen an uncomfortable idea: what we eat and what we breathe may be shaping the aging brain as forcefully as the genes we inherit.
A 2025 systematic review maps where plant-based eating moves the metabolic needle — and where the evidence still thins out. Here's what a busy 40-year-old should actually take from it.
Two new reviews argue your gut bugs are one of the most workable levers on healthy aging — and the plants on your plate are how you nudge them.