For fat loss, performing cardio while fasted or after eating does not matter as long as you maintain an overall caloric deficit; simply choose the method you prefer.

noli's read

This statement is solidly supported by research on exercise and body composition. A major meta-analysis published by Hackett and Hagstrom in 2017 compared fasted and fed cardio, confirming that neither protocol offers a superior advantage for fat mass loss. Similarly, a randomized controlled trial (RCT) conducted by Brad Schoenfeld in 2014 showed similar weight variations when energy intake throughout the day is equivalent. While fasted exercise temporarily uses more lipids as fuel during the effort, the body subsequently adjusts by burning more carbohydrates for the remainder of the day. Finally, the nuance provided regarding high intensity is entirely accurate: maximal performance or prolonged endurance generally benefit from a prior intake of carbohydrates to maintain energy.

the sources

1. 1Hackett D, Hagstrom AD 2017
2. 2Vieira AF, Costa RR, Macedo RCO, Coconcelli L, Kruel LFM 2016