18/09/2026
Could eating less for a short period actually change how the body responds to chemotherapy?
This is one of the more fascinating areas of integrative oncology research.
During fasting, several metabolic changes occur: insulin and IGF-1 signalling falls, mTOR activity decreases, AMPK becomes more active, and healthy cells begin shifting away from growth towards cellular maintenance and stress resistance.
Researchers call one of the theories behind this Differential Stress Resistance.
The idea is that healthy cells may temporarily become more resistant to stress, while cancer cells—because of dysregulated growth pathways—may be less able to enter this protective state.
It’s biologically compelling.
But compelling biology ≠ established clinical practice.
Human trials are still relatively small, and fasting during chemotherapy is not appropriate for everyone.
I’ll be unpacking the research—and the limitations—over the next few posts!