El Universal, a Mexican news outlet, claims that the following 9 foods can help extend humans' lifespan.

1 Blueberry. Rich in antioxidants, vitamins and minerals, blueberries can prevent inflammation, promote the releasing of free radicals and reduce the incidence of cancer, heart disease, or cognitive disorders such as Parkinson's disease.

2 Salmon.  Rich in omega 3 fatty acids, salmon enhances brain and heart functions and prevents cognitive decline or cognitive disorders.  

3 Yogurt. Rich in probiotics, yogurt protects the immune system, prevent diseases, and help the body absorb nutrients from food.  Long term consumption of yogurt helps maintain health and prevent certain types of cancer, and alleviate diarrhea and urinary tract infections among other diseases.

4 Sweet potatoes. Rich in potassium, fiber and vitamin A, sweet potatoes are good not only for vision, bones, fertility, child growth and development, but also for blood pressure and blood sugar.

5 Green tea. High in antioxidants, green tea slows the aging process, helps balance cholesterol and protects against cancer.

6 Spinach. Very low in calories, but rich in vitamins A and E, minerals, and calcium, spinach protects human cells.  A cup of spinach juice contains the equivalent amount of calcium contained in a glass of milk.   It also has many benefits for the cardiovascular system.

7 Tomatoes. Rich in lycopene, tomatoes can slow down human aging, help the body against prostate cancer and coronary heart disease, and contains potassium, iron and other trace elements and vitamins A, C, E, etc.

8 Dark chocolate. High in flavonoids, dark chocolate can help protect heart health.

9 Oats.  There is a lot of soluble fiber in oats.  The food can reduce cholesterol levels, control blood sugar and reduce the risk of diabetes and heart disease.  (edited by David Liu)