Research shows that the causes of kidney cancer are very complex. The factors that have been clearly related to the occurrence of kidney cancer include: genetics, smoking, obesity and hypertension, other factors such as food, radiation and occupation also have some relationship with kidney cancer. 1.Heredity Will kidney cancer be hereditary? This is a very relevant question to the people. In fact, only very few kidney cancer cases are related to heredity. We call kidney cancer that can be inherited to the next generation as familial kidney cancer, which is a genetic disease caused by genetic defects on chromosomes and accounts for a relatively small proportion of kidney cancer, only 2% to 4%. 2.Smoking A lot of scientific researches have shown that smoking is one of the most clear and important causes of kidney cancer. The risk of kidney cancer in smokers is twice as high as that in non-smokers. Long-term smokers, especially those who have smoked for more than 30 years, have a higher risk of developing kidney cancer. At the same time, we also found that the risk of kidney cancer decreases year by year after quitting smoking, and the risk of kidney cancer can be reduced by 15% to 30% after quitting smoking for 10-15 years. 3. Obesity and hypertension Obesity and hypertension often appear together. Some research studies have shown that obese people are twice as likely to develop kidney cancer as compared to those with normal weight. The probability of hypertension in obese people is also higher than that in normal people. Hypertension and obesity are independent factors that lead to higher risk of kidney cancer. 4.Other factors In addition to the above factors, there are some other factors related to the occurrence of kidney cancer. Some studies have found that high protein and high fat diet can also lead to an increased risk of kidney cancer. In contrast, recipes rich in fruits and vegetables can reduce the risk. Occupations such as long-term metal exposure, petrochemical workers, and radiation workers have also been reported to increase the risk of kidney cancer.