(NOTE: This is speculation and a bit hysterical, but it's an important thing to consider anyway.)
A senior scientist at MIT, Dr. Stephanie Seneff, made these remarks during a panel presentation in Groton, MA last week, specifically cites the Monsanto herbicide, Roundup, as the culprit for the escalating incidence of autism and other neurological disorders. Roundup was originally introduced in the 1970s and could only be used as a weed killer, but is not regularly used on crops such as corn, soy and wheat to kill them right before harvest. Farmers have a problem where all the crop does not ripen at once, so Roundup is used to kill it all at once and then harvested 2 days later. (See the actual Roundup label.)
According to Dr. Seneff, glyphosphate interferes with gut bacteria via the Shikimate pathway. Gut bacteria are a critical part of our lives and we are just learning how important they really are. With the gut bacteria depleted, humans are now missing several key amino acids. According to various studies, glyphosate depletes the amino acids tyrosine, tryptophan, and phenylalanine, which can then contribute to obesity, depression, autism, inflammatory bowel disease, Alzheimer’s and Parkinson’s. Monsanto, the seller of glyphosphate products, naturally disagrees.
Some critics of Dr. Seneff argue she is confusing correlation with causation, which could very well be true. However, causation is nearly impossible to prove given the human body's complexity, and correlation has often been used in the past to determine the toxicity of a substance. Except when it comes to Monsanto products. And congresscritters that accept "donations" from Monsanto and biotech companies.
There are dozens of studies showing glyphosphate danger has correlation with disease and conditions. Yet there are almost no studies saying the same thing about THC, cannabidiol, and pot. Since Congress, the DEA, and the FDA are inconsistent, their judgment cannot be trusted, nor can their decisions be assumed to be for the better of all people. The FDA, especially since they are being sued for covering up facts about glyphosphate, appears to make decisions based on hysteria, and donations, rather than actual facts.