If anyone on this site ever has to do chemo or knows someone that has to do chemo, I would suggest they look into ADF (alternate day fasting). Here is a quick snippet of one study.
"Recently Raffaghello et al.  showed that short term starvation (STS) of 48 and 60 h increased resistance to oxidative stress in yeast and greatly reduced the toxicity of high doses of a chemotherapy drug in three different strains of mice. Fasted mice survived without apparent toxic effects despite receiving 2–3 times the maximum human dose of etoposide, which acts by oxidative injury to DNA. Over 40% of control mice receiving this high dose died and the survivors exhibited severe toxicity.
In one part of the study mice were starved for 48 h and given a dose of etoposide 3 times greater than the maximum used in humans. Forty three percent of control (non-starved) mice died while only one of the pre-starved mice died. The starved mice lost 20% of their weight in 48 h and regained most of it in the 4 days after chemotherapy while control mice lost 20% of their weight after treatment. The starved mice recovered completely but the surviving controls showed signs of toxicity including poor mobility, hunched back and ruffled hair.
A second group was fasted for 60 h and given 4–5 times the maximum human dose. All of the control mice died by day 5 but none of the fasted mice died or showed signs of toxicity. The fasted group lost 40% of its weight in 60 h, but regained it in 1 week, whereas the surviving control mice lost 20–30% of their body weight after treatment and showed marked signs of toxicity."