There is no evidence to suggest that eating durian promotes the spread of cancer cells; your view is incorrect. Lin Lizhu, director of the Department of Oncology at the First Affiliated Hospital of Guangzhou University of Chinese Medicine, said that when it comes to eating fruit, cancer patients have no absolute禁忌 (taboos). No fruit is absolutely forbidden to eat. Regardless of the fruit, the principle is to consume it in moderation.
Durian is rich in protein and lipids, providing excellent nourishment for the body and serving as a good nutritional source from fruits. From a Traditional Chinese Medicine (TCM) perspective, it is a tropical fruit that is considered "heat" and "dampness" inducing. Whether one can eat a lot of it depends mainly on their individual constitution and tolerance, and this is also true for cancer patients. If you are a person with a "heat" constitution, prone to "internal heat" (上火), and feel mentally sluggish and fatigued all day, then you should eat less. If you eat a lot of durian and experience no discomfort, then eating more is fine. The same principle applies to other tropical fruits like mangoes and lychees. However, cancer patients may not necessarily like durian, as they often have poor appetites, and eating too much durian can further affect it.
Furthermore, durian has a dense texture. It absorbs water and expands in the digestive tract, and excessive consumption can lead to intestinal blockage and constipation. Additionally, people with a "heat" constitution may experience "internal heat" from eating too much durian. To reduce its "heatiness," you can drink more water after eating durian to aid digestion.
Moreover, after durian has been stored for a period of time, if it smells of alcohol, it has definitely spoiled and should not be eaten. For everyone, including cancer patients, eating fresh food is best for the body. Lin Lizhu mentioned that durian is high in calories and sugar, so obese people should eat less of it, and people with diabetes should avoid it altogether.