Eating moldy peanuts for 7 days in a row does not necessarily lead to cancer. Cancer generally refers to all malignant tumors, which can seriously endanger the health of patients, and can also be life-threatening. However, the exact cause of cancer is still unclear, and it is considered to be caused by a combination of factors. Although it is said that consuming moldy peanuts will lead to an increased risk of cancer, it does not mean that eating moldy peanuts will necessarily lead to cancer. The development of cancer itself is a complex and lengthy process. That is why it is not necessarily true that an individual will develop cancer even if he or she eats peanuts for seven days in a row. In fact, both moldy peanuts and other moldy foods are somewhat harmful to an individual’s health, so it is important to pay attention to the safety and hygiene of your diet and not to eat moldy foods. Daily if there is some unusual physical discomfort due to improper diet, it is necessary to consult a medical professional in time to dispose of it.