Re: Nickel is cancerous
It's like saying asbestos is safe in your house, if you don't mess with it. Trouble is, it becomes friable over time. LED lights (also CFL, to a lesser degree) emit UV or near enough - so much so that museums hastily reverted back to halogen because of the "Our Masterpiece Is Mysteriously Fading Despite Being Kept Out Of Sunlight" problem.