LED's Harmful to Your Health.

Seems like anything will kill you nowadays. As one who was in the early days of color scanning, I know quite a bit about light and how humans perceive it, so the one thing that strikes home is the color temperature of LED lights. Review the color temperature for your application, that is all.

IMO we have a lot bigger things to worry about, I love LED's and doubt I'll stop using them. Case in point, I have a fluorescent over my desk (also deadly, it appears) and the bulb finally let go, I replaced with a cheap LED, 10x the light, half the consumption.

Not going to link to a specific article but there are tons out there from trash to well-written gold. Do a search for "LED's harmful."

 

LEDs have more scotopic light than halogens starting around color temperature 3200k and above. Most LEDs operate around 5500k.

Humans are more sensitive to scotopic light at night due to the way we've evolved to see at night using moon light. What this means is that you need less light output for the same perceived light output. There's always a way it will affect people's health, but one of many, many things that also do far more.