Yellow No. 5 has also seen it’s share of controversy, not so much because it’s ever done anything much to anyone (most countries outside of Norway consider it safe, and “sensitivity” complaints against it are about on par with other coal tar dyes) but because it became the most widely used food coloring after Red No. 2 was de-listed due to public pressure. Once that happened, Yellow No. 5 was simply the next color on the target list. However no serious complaints — only urban legends — have ever sprung up around it.
The most famous of these surfaced in the early 1990’s when rumors began to circulate that consumption of Yellow No. 5 resulted in reduced sperm counts. The myth wasn’t based on any known science, but it was enough, so it’s been said, to cause a run on Mountain Dew among young urban men looking for a cheap form of birth control. Which is undoubtedly an urban myth in and of itself.