
Because even though CFLs contain small amounts of mercury — less than 4 milligrams per bulb — it’s still enough mercury to cause brain damage.
If you’re interested, this 4-minute video from the University of Calgary shows how mercury damages neurons in the brain.
But don’t let the presence of mercury stop you from using CFLs — they are much more positive than negative if you exercise good care.
The Environment Protection Agency provides some basic handling tips:
- CFLs are made from glass. Therefore, screw and unscrew the bulb using the base and not the bulb.
- Never force a CFL into a light socket.
- When the bulb burns out, take it to a specially-designated recycling center in your area. Do not throw out a CFL with the “normal” trash.
In addition, the EPA drafted guidelines for dealing with broken bulbs within a household. Among the recommendations: Don’t wash your mercury-covered clothing, and don’t vacuum up the poison. This is somewhat counter-intuitive for most people.
The EPA’s review of CFL safety is 3 pages long and can be viewed on its Web site.
CFLs are more expensive than traditional bulbs but offer long-term savings in both energy and environment costs. And, with common sense care, CFLs pose no household health risks.