Figure 6. A schematic diagram on the hormetic effect of ITCs.

For all cell types, dosage range 0-A is safe. In the majority of diets, the intakes of hormetic phytochemicals are likely to fall within this safe range. For normal cells, dose B could be used promote new blood vessel formation or promote wound healing; doses >C are toxic. For tumour cells, doses between A and C should be avoided; and doses >C to D could be used for chemotherapy.