The Nutritional Value of Black Beans: Two Groups of People Shouldn't Consume Them Excessively

The Nutritional Composition of Black Beans

Black beans, as a type of black legume, share a nutritional value similar to that of soybeans. They contain abundant protein, dietary fiber, rich oils (especially unsaturated fats), various vitamins, and a variety of minerals. One noticeable difference between black beans and soybeans is their fat content, particularly unsaturated fats, as black beans generally have lower levels. This is why black beans are not commonly used for oil extraction.

Health Benefits of Black Beans

In addition to the aforementioned rich nutrients, black beans also contain a substantial amount of choline, which plays a significant role in the human body. Firstly, choline is a crucial component of cell structure and essential for maintaining the integrity and signaling function of human cells. Secondly, choline plays an indispensable role in lipid transport in the liver, particularly for individuals with fatty liver. It is especially important as choline significantly contributes to brain development, enhancing memory and preventing cerebrovascular sclerosis. Insufficient choline intake (as well as folic acid) during pregnancy can lead to neural tube defects in the fetus.

Who Should Avoid Black Beans?

First, individuals with gout should avoid consuming black beans due to their high purine content, which is a primary cause of gout. The substantial purine in black beans can lead to elevated uric acid levels in the body, causing disturbances in uric acid metabolism and resulting in uric acid deposition in the joints, leading to gout.

Second, individuals with kidney disease should refrain from consuming black beans. While those with kidney deficiency can consume black beans to tonify the kidneys, those with other kidney diseases should avoid them. Black beans are not conducive to digestion, and their consumption can exacerbate the burden on the kidneys in individuals with severe kidney disease.