A Case Crossover Study of Intermittent Fasting in CLL/SLL

"Participants will follow the 5:2 Method (an intermittent fasting regimen) for a 90 day duration. This entails eating ad libitum for five days per week (normal days) and limiting total calorie intake to 800kcals per day (fasting days) for the remaining two days per week. The fasting days can be sequential or dispersed throughout the week, based on patient preference."

Participants will have already followed the 16/8 Method (an intermittent fasting regimen) for a minimum of six days per week for a 90 day duration. This entailed limiting the eating hours to an 8-hour window, then fasting for the remaining 16 hours per day, with the last time of intake being 8pm.