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Many LED lights currently available, can contain up to eight times the amount of lead considered 'safe' under some present legislations. The high intensity ones contain more than the low intensity ones.
They also contain high levels of Nickel and arsenic which can cause cancer. (Ref: January 2011 issue of Environmental Science & Technology).
The problem I find with the flouro ones, is that the down-rating factors they apply to them, seem to result in way lower amounts of light than the equivalent incandescent ones. The end result being, that I end up buying the higher power rating globes to compensate, which somewhat defeats the purpose of reducing energy consumption overall.
I was happy with turning off incandescent lights when they weren't being used. This reduces power consumption way more than changes in technology.
Cheers
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