Hi Gilly,
I would say that there is no doubt that there are far too many toxins and contaminants present in what we eat and these are known to contribute to many modern health problems. To name a few examples:
- our drinking water carries enormously high amounts of oestrogen and progesterone which is not broken down by the purification process, resulting in puberty onset in girls as young as 8 and 9
- our meat sources are pumped full of steroids, antibiotics and growth hormones, resulting in a massive increase in hormonally related cancers
- our fruit and veg is sprayed with pesticides and herbicides that cannot be broken down by human metabolism and result in a toxic build-up.
However, weight gain and retention is not something that has ever been proved to have any relationship to toxins.