By now most people know that GMO stands for Genetically Modified Organisms.
Genetically modified, or GMO, foods come from seeds whose DNA have been altered to introduce certain traits into species where they would not ordinarily appear.
Genetic engineering involves crossing species which could not cross in nature. For example, genes from a fish have been inserted into strawberries and tomatoes.
Many people mistakenly believe that the FDA approves GM foods through rigorous, in-depth, long-term studies. In reality, the FDA has absolutely no safety testing requirements. Instead they rely on research from companies like Monsanto, research that is meticulously designed to avoid finding problems.
Before the FDA decided to allow GMOs into food without labeling, their own scientists had repeatedly warned that GM foods can create unpredictable, hard-to-detect side effects, including allergies, toxins, new diseases, and nutritional problems. They urged long-term safety studies, but were ignored.
Some independent studies were done after GMOs appeared to be causing death and disease, this is what was found:
The stomach lining of rats fed GM potatoes showed excessive cell growth, a condition that may lead to cancer.
More than half the babies of mother rats fed GM soy died within three weeks, and were smaller.
Thousands of sheep, buffalo, and goats in India died after grazing on Bt cotton plants.
Rodents fed GM corn and soy showed immune system responses and signs of toxicity.
Most processed cat foods (and human foods) contain GMO ingredients, but they are not labeled because truth in labeling is not allowed in the US. Yes, that's correct, manufacturers are not allowed to label foods truthfully as "GMO" free.
The best way to avoid GMOs is to buy only organic, which as we all know is quite expensive. You can also check this website to find a list of GMO containing foods and manufacturers.