Recent studies by JRSM Open and Cancer Research Centre author suggests that underprivileged societies that consumed quality foods had the healthiest diet in mid-Victorian Britain.
It has been measured that it was the most isolated regions, with low mortality rates, that are the healthiest regions.
People would have eaten an abundance of local vegetables, potatoes, fish, milk and whole grains in these areas.
JRSM Open researchers indicate that the most nutritional diets were consumed in rural British locations, such as western Ireland, the isles of Scotland and the mainland.
Study author from the Leicester Cancer Research Centre, Dr Peter Greaves stated: "The fact that these better-fed regions of Britain also showed lower mortality rates is entirely consistent with recent studies that have shown a decreased risk of death, following improvement towards a higher Mediterranean dietary standard.
"The rural diet was often better for the poor in more isolated areas because of payment in kind, notably in grain, potatoes, meat, milk or small patches of land to grow vegetables or to keep animals."