Vaccines are a definite cause. As the number of mandatory vaccines ($$$) increases every year, so do new cases of autism. Autism used to be extreme rare when very few vaccines were given. Studies that claim otherwise are funded by Big Pharma, which also gives billions of dollars to medical schools which train future pediatricians to give as many vaccines as possible, while suppressing information about the risks of these vaccines. ($$$). Think of the effect in a child’s developing brain when you’re pumping vaccine ‘adjuvants’ into it via the bloodstream including substances like propylene glycol, formaldehyde, aluminum, mercury compounds, polysorbate 60 and so on and so forth. These are all extremely toxic substances when they get into the brain. That’s why there are so many more cases of autism these days because kids are getting more and more of these adjuvants pumped into their brains causing all sorts of inflammation and damage. Corporations profit from human suffering. $$$.