nk cells, also known as natural killer cells, belong to the body’s immune cells. nk cells have the ability to fight tumors, viruses, and improve immunity. nk cells are high, women should pay attention to whether there are infections or tumors. nk cells, if it is only temporarily high, there is no other discomforts, you can improve the immunity of the organism through appropriate exercise and a healthy diet, if the results are not good after improvement, you should review the cause. If the effect is not good after improvement, you should go to the hospital to review the cause.