Increases in allergies, asthma, ADD/ADHD, autism specturm disorder since GMO's have become popular

"As GMO’s have become popular over the past 3 decades, there has also been a:
400% increase in allergies
300% increase in asthma
400% increase in ADD/ADHD
1500% increase in autism spectrum disorder
The science is still out as to whether or not there’s a definite connection between GMO’s and these health issues, but until these foods are proven to be safe, I recommend avoiding them. This may be controversial in the United States, but in the rest of the world people are aware of the risks of consuming GMO’s. There, they are widely believed to cause reproductive issues, immune dysfunction, and a host of other issues.

Regardless of the other possible health risks, it is certain that GMO’s contain far fewer nutrients than their non-GMO equivalents. There is simply no reason to eat GMO foods if you want to be a high-performing individual."

• Dave Asprey, "The Bulletproof Diet," (2014), 58.