Fernando de la Fuente, who has run a fruit and vegetable stall in a Madrid market for 47 years, told The Guardian he was unsurprised that researchers see a connection between Spaniards' diet and longevity.
He said people in Spain eat well because they include fruits, vegetables, and fish in their diet all year. Fruits and vegetables are generally both accessible and affordable throughout Spain.
"A Spanish diet without fruit and vegetables is just unthinkable," de la Fuente told The Guardian.
There is growing evidence that the Mediterranean diet — which emphasizes vegetables, fish, olive oil, nuts, and whole grains while slashing processed foods and red meat — can help protect people from aging.
Read more: There's even more evidence that one type of diet is the best for your body and brain — and it could save you money, too
Studies show that people who follow this diet have a reduced risk of heart problems, diabetes, and some types of cancer. The diet is also rich in healthy fats that have been linked to higher cognitive performance and a lower risk of dementia.