How does children's cnacer affect me? Is it a reflection of pollution and toxins in our (and my) food and water?

Childhood cancer. It's particularly tragic when children suffer cancer. Cancer in them, as in adults, can be genetically or environmentally linked. However, to address your concern about what are your risks when a child contracts a malignancy, rest assured that toxic exposures on their part are likely more limited than you might accumulate having lived longer into adulthood. Eat healthy, avoid smoking, exercise.