Eat foods that boost your lifespan: If you want to increase your life expectancy, try eating nutrient-rich foods such as fruit and vegetables and plenty of oily fish. Oily fish, such as salmon, mackerel, sardines and trout, are a good source of vitamins A and D, which are good for the immune system, and omega-3 fatty acids, which have been linked to a lowered risk of heart disease and stroke. For a tasty way to increase your life expectancy, you could also try snacking on antioxidant-rich dark chocolate, which can lower your risk of heart disease. Jeanne Louise Calment, who lived a grand total of 122 years and 164 days, put her good health in part down to her regular chocolate consumption.

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