Mediterranean Diet Boosts Happiness in Seniors and Extends Healthspan in Mice

A study of 3,296 English adults aged 50‑90 found that greater adherence to a Mediterranean‑style diet was linked to higher psychological well‑being, including a stronger sense of purpose and optimism. The association persisted after accounting for depression and socioeconomic factors, and participants following the diet experienced a smaller decline in emotional health during COVID‑19 lockdowns.

Separate research from the University of Southern California tested a low‑protein, methionine‑supplemented “longevity” diet inspired by Mediterranean eating patterns in 20‑month‑old mice. The mice ate more food yet lost body fat, showed reduced frailty and enjoyed a longer healthspan. An analysis of over 200,000 people showed that higher consumption of animal protein (and thus methionine) was linked to higher rates of obesity and type‑2 diabetes, supporting the human relevance of the dietary pattern.