For many people, unexplained weight loss can be a warning sign of cancer. According to statistics, about 40% of people report unexplained weight loss when they are first diagnosed with cancer, and about 80% of people with advanced cancer experience weight loss and wasting.

During cancer treatment, weight can be reduced as a side effect of chemotherapy and radiation therapy. If you've been diagnosed with cancer, pay attention to improving your diet, which will not only prevent weight loss, but also help keep your immune system working properly throughout your treatment.