In the past, cancer news mostly involved the elderly, but now young people in their 20s are also being diagnosed. The latest examples are internet celebrities Feng Timo and a grain of sand, both in their 20s, who have developed cancer. This is obviously very abnormal. Curious people should learn more about what the spike protein is. Current COVID vaccines either contain the spike protein themselves or stimulate the body to produce a small amount of it. Among the eight effects of the spike protein on the human body, the most obvious is DNA damage, which is a significant factor in carcinogenesis. During the two years of the COVID-19 pandemic, many studies have analyzed the threat of the spike protein from different angles. It is now known to have several harmful effects: 1. Damages lung cells (including alveolar and pulmonary endothelial cells) 2. Damages mitochondria and DNA structure 3. Damages heart and vascular cells 4. Increases the risk of blood clots 5. Damages brain cells 6. Promotes inflammation 7. Suppresses immunity 8. Increases cancer risk