Ideally, it’s desirable for patients to adopt a vegan or wholly plant based diet, with one exception: The omega-3 fatty acids in fish oil present numerous benefits, and fish oil capsules do not increase insulin levels. A vegan diet is low-fat (only 15% of dietary calories should come from fats), is moderate in protein, and incorporates whole-food carbohydrate sources that are low on the glycemic index: semolina or wholegrain pastas, whole fruits, and whole-grain products like sprouted wheat breads (instead of wheat-flour breads). Further, because high-glycemic-index carbs can boost insulin levels, the diet should provide carbohydrates from sources that are low in glycemic index. For instance, as even carrot juice has quite a bit of natural sugar, we recommend green vegetable juices.
For instance, cruciferous vegetables like cabbage, broccoli, cauliflower, and kale are rich in sulforaphane, while onions and garlic contain allicin. Both compounds are proven to inhibit or slow the growth of cancer cells and cause the cells to produce higher levels of antioxidants as well as enzymes that detoxify the body. These foods also can increase the ability of healthy tissues to cope with chemotherapeutic drugs and radiotherapy. In addition, they may present post-treatment benefits by helping to block the development of additional cancers.
Another food with powerful anti-cancer properties, a must for any anticancer diet, is spirulina, a supplement produced primarily from two species of blue-green algae. Spirulina contains a phytonutrient that blocks a signal pathway that makes cancer cells more aggressive and that protects them from programmed cell death. In addition, spirulina contains polysaccharides that boost the ability of the immune system’s natural killer (NK) cells to block metastasis.