The benefit of eating more fruits and vegetables for preventing diabetes is less strong in older people than in younger ones, possibly because aging changes how the body responds to nutrients.

Eating more fruit and vegetables together doesn't seem to lower the risk of type 2 diabetes, according to a review of four large studies tracking thousands of adults over many years.

Adding a little more fruit and veggies to your diet helps a lot if you’re eating little now — but adding even more beyond that doesn’t help as much.

People who eat more leafy greens like spinach and kale tend to have a lower chance of getting type 2 diabetes, according to studies tracking thousands of adults over many years.

People who eat at least five servings of fruits and vegetables a day — as estimated by blood tests — have about a one-third lower risk of developing type 2 diabetes than those who eat less.

Blood tests for fruit and vegetable nutrients are better at predicting diabetes risk than asking people what they ate, because people often misremember or misreport their diet.