Fasting for up to 72 h, divided as 48 h before and 24 h after chemotherapy infusion, appears safe and feasible in people with cancer receiving platinum-based combination chemotherapy. Preliminary evidence from correlative studies supports that fasting may protect the body and tissues against chemotherapy damage.

Subjects were instructed to consume zero calories, but ample water and non-caloric beverages. However subjects were advised that if they had symptoms related to fasting (such as feeling faint, weak, dizzy, etc.) that they should consume a small amount of juice or food, aiming to stay under 200 kcal in a 24 h period.

The scientific journal article can be found below for further information.

Fasting with Platinum-based Chemotherapy October 2016