Patients feel inconvenienced by “not being able to eat raw food”. “Can’t eat out when the white blood cells are low”, etc. Causes 1. Side effects of chemotherapy drugs (leukopenia) It causes a decrease in white blood cells (neutrophils) that guard your body’s health against infection. During leukopenia (white blood cell count below 1,000 and neutrophil count below 500), you should avoid eating raw food or other foods that can easily breed various kinds of bacteria because you are prone to infections. In cases of low white blood cells, whitening injections are sometimes necessary. 2. It is not clear which foods can increase white blood cells. Life care 1. Eat well cooked food. If you have low white blood cells (neutrophil count below 500 for more than 2 weeks), do not eat the following foods: “Raw foods (raw meat, raw vegetables, raw eggs, etc.) tend to harbor various bacteria, (dried fruits, dried sweet potatoes, homemade pickles, etc.) fermented foods (homemade yogurt, natto, cheese containing mold, etc.)” 2. Find ways to make the daily meals more varied. Meals can become very monotonous due to limited ingredients and cooking methods. It is recommended to make pasta or sauce for the main meal. 3. Pay attention to the hygiene of the bathroom and cooking utensils.