At the beginning of the New Year, “authoritative sources” in the United States said that most cancers are caused by bad luck. For a while, the media gave theories to those who are lazy and good at their jobs. However, the richest countries in the world, the United States, Europe and Japan, all have the highest cancer rates. China, which is becoming richer, has a higher cancer rate than India. What exactly is the “mysterious relationship” between lifestyle and cancer incidence? Looking back to 40 years ago, Chinese urban residents were supplied with only half a catty of meat and half a catty of oil per month. At that time, the incidence rate of cancer in China was less than 100/100,000, which was comparable to the level of India today. After entering the 21st century, China’s national living standard has doubled several times, and there are all kinds of commodities available. Yet the incidence of cancer in China has skyrocketed again. If it is a matter of luck, then no Chinese would argue that today’s luck is worse than in the past. It is true that in a fast developing society, there are always troubles. The pressures of work and life are often confusing; the problems of housing, transportation, and compensation packages are also unpleasant. Although, the worries of life may also affect the occurrence of cancer. But, after all, scientific research has confirmed that cancer is caused by genetic mutations. The Chernobyl nuclear power plant leak in the former Soviet Union led to a dramatic increase in the number of thyroid cancers in the local population, caused by genetic mutations caused by high doses of radiation. The number of smokers in China is as high as 300 million. The incidence of lung cancer in China rose from fourth in the 1970s to first in the 1990s. In contrast, the success of tobacco control in men in the United States during the same period has led to the beginning of a decline in the incidence of lung cancer in men. In addition, environmental pollution is also an important cause of lung cancer. The sky in Lhasa, Tibet is azure and the incidence of lung cancer in Lhasa is lower than in any city in China. Of course, cancers of the digestive organs account for more than half of the cases, and the relationship between diet and cancer is becoming clearer. Not only does delicious food make people’s intestines fat and bellies round, but the incidence of colorectal cancer has also shot up a few places. The hepatitis B epidemic in China in the 1970s made China the number one country in the world for liver cancer. It has been eloquently proven that bad luck may have an impact on the development of cancer. But there is no basis to say that cancer is caused by bad luck. Recently, more and more cancer experts have started to pay attention to the influence of lifestyle on cancer incidence. They believe that eating too much and reduced physical activity are associated with cancer development. Westerners are accustomed to too much steak, cheese and sweets, and obesity abounds. The incidence of cancer in Western countries is still among the highest in the world. Although European and American people love to exercise, it is not easy to burn off the excessive protein and fat intake through exercise. In contrast, the diet structure of Chinese people is reasonable. The staple food is mainly rice, white flour and mixed grains, supplemented by vegetables and fish, meat, eggs and milk. Eat dry when busy, half dry and half thin when leisure. The amount of food eaten by ordinary people to meet the needs of the body is the standard. However, the economic take-off and the opening up of Western-style habits have made the countrymen start to change their traditional eating habits. The more chicken, duck and fish they eat, the less and less physical activity they have. This lifestyle is following the footsteps of Europeans and Americans to “create cancer”. The rising incidence of cancer in China has become a growing threat! Don’t move closer to the cliff of cancer, open your legs and stay away from the haze of cancer; keep your mouth shut! Stop cancer from entering your mouth!