there are two other major food groups other than carbs, and I should have been more specific, better to avoid REFINED carbs or anything with quick-metabolizing sugars in it. that includes wheat, flours made of grains, starches, pastas, white rice, potatoes, waffles/pancakes/cakes of any sort, biscuits and rolls. better to eat stuff which is slow-metabolizing such as:
Vegetables and Fruits-
Most vegetables are low GI foods, including artichokes, asparagus, broccoli, cabbage, cauliflower, celery, eggplant, all types of greens, okra, peppers, squash and zucchini. Among the starchy vegetables, peas, carrots, parsnips and yams are all slow digesting. Fruits tend to be higher in natural sugars than vegetables and so they are digested and absorbed more quickly by the body. Some, like grapefruit, have interactions with certain meds, so a cancer patient IMHO is best to limit fruit intake until the conclusion of treatment.
Beans and Legumes-
Beans and legumes make good choices when you’re looking for carbs that digest slowly, including baked beans, black-eyed peas, black beans, chickpeas, kidney beans, navy beans, lentils, soybeans and peanuts. The added advantage of these foods is that they are rich sources of plant protein if you are trying to reduce your intake of animal protein.
Nuts and Seeds and safe grains-
With their high fat, high protein and low carbohydrate content, nuts and seeds are slow to digest. For example, walnuts, almonds, pistachios, pine nuts, hazelnuts and cashews all are slow-metabolizing, as well as sesame, amaranth, squash, sunflower and sprouted seeds. Peanut butter is a slow-digesting carb, as are unsweetened pastes and butters made from low-GI nuts. Quinoa is also a nutritious and healthy item to include, one of the healthiest grains one can choose to eat. Whole wheat, OTOH, has a higher glycemic index [metabolizes faster] than even white bread so it should be avoided.
Dairy and Non-dairy Alternatives-
You may not think of dairy products as carbs, but these foods supply natural sugar in the form of lactose. Some slow-digesting dairy foods include skim and full-fat milk; cheeses such as Cheddar, mozzarella and cottage; and yogurt. Non-dairy alternatives like almond and soy milk are also slow-digesting, but rice milk is not.
a person need not starve while undergoing cancer treatment, and these foods can be continued after treatment. if a person lives in a pot-legal state, "Medibles" [not inhaled but instead eaten] can stimulate appetite. above all, AVOID SUGAR IN ALL ITS FORMS!