Recommended no. of servings of fruits and vegetables an adult should eat everyday

According to http://www.mayoclinic.com/health/dash-diet/HI00048 , an adult needs to eat 4 to 5 servings of fruits and 3 to 5 servings of vegetables a day.

According to http://www.hpb.gov.sg/HOPPortal/article?id=2758 , an adult should aim to eat at least 2 servings of fruit and 2 servings of vegetables a day.

One serving of vegetable weigh 80 grams. (Note: Some sources say one serving of vegetable weighs 100 grams).

The the organic green spinach below weighs 180 grams, i.e.about 2 serving of vegetable.

The problem is many people eat less than two to three servings of vegetable in a week.

 How about you? 

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