Black beans, Chinese olives and black currants are all members of the black group.

These are good for your kidneys.

Black beans are a very good source of cholesterol-lowering fiber, as are most other legumes. In addition to lowering cholesterol, their high fiber content prevents blood sugar levels from rising rapidly after a meal, making these beans a good choice for individuals with diabetes, insulin resistance or hypoglycemia. When combined with whole grains such as brown rice, black beans provide a virtually fat-free high quality protein.

You may already be familiar with bean'sbfiber and protein

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