Summarize:

Low appetite is a common side effect of cancer treatments. Oftentimes, you may lack the appetite to finish a full meal all at once. You can try to combat this by eating smaller meals throughout the day. Eat about every 2 hours. Have small meals as well as snacks. Ask your doctor for a reasonable calorie count and try to break that down throughout your daily meals. Do not wait until you feel hungry as you might not notice hunger pains if you're feeling nauseous from treatment. Try to prepare meals and snacks ahead of time or have someone do so for you. It can be hard to make something to eat if you're not feeling well. Whenever you have the chance, add more calories to a dish. There are many ways to add a few hundred more calories to an existing meal: Use whole milk and cream over skim or fat free varieties. Use milk instead of water for canned soup and packet sauces. Add grated cheese to pasta, mashed potatoes, eggs, and other dishes. Use extra filling in sandwiches. Buy full fat dairy products. Serve vegetables with a heavy sauce. When trying to gain weight with cancer, you need to do so in a healthy manner. Nutrient dense foods have a lot of nutrients. While they tend to be low calorie, you can mix nutrient-dense foods with other high calorie options to help you gain weight and get necessary calories. Nutrient dense foods include: Fruits and vegetables Whole grains and whole wheats Seafood and lean poultry, like meats, beans, eggs, and nuts. If you're struggling to keep your appetite strong, try to make yourself the kinds of foods you really enjoy. Eating your favorite meals more often can help entice you to eat even if your appetite is poor. Try to cook foods you really enjoy and eat them on a regular basis.
Eat small meals regularly. Opt to increase calories when possible. Seek nutrient dense foods. Eat your favorite foods more often.