Yellow Dyes With Strange Effects
One conspiracy theory that surrounds Mountain Dew is that one of its ingredients, Yellow #5 (aka Tartrazine) lowers sperm count. To this day, there has been no scientific proof regarding the effects of the soda on young men and their ability to procreate. Some studies however have shown the ingredient can increase ADHD-like symptoms in those with and without the disorder although the likelihood is significantly low.