I like the "lightbulb health" related literature from the turn of the century with the unfounded worry that it could inhibit sleep and have other side effects. Those same people would be this generation's "wifi health" nuts.,(reply>), Fluorescent lights tend to flicker imperceptibly at 50/60 Hz which is usually what causes headaches and eye strain.  Old incandescent bulbs didn't flicker so much so the effect wasn't as bad.  As for your electricity meter spying on you, some computer security researchers have demonstrated that you can extract information from a computer not connected to any network providing you can trick someone into installing some malicious software that works by using 100% CPU on and off at a certain rate.  This causes the computer to use more power briefly in a pattern matching the CPU load, and by attaching an electricity meter to the building, you can pick out the up/down pattern of electricity use and extract the data in a similar way to tuning in to one radio station out of a whole bunch of them transmitting at the same time through the same air.  So conceivably it's possible your electricity meter can be spying on you, but it needs a partner to supply it the information!,(reply>), There are lightbulb health concerns now, mostly about EMF and RFI from CFL and LED bulbs, and about the color spectrum. The real nuts think that your electric meter is spying on you or some similar nonsense!,(reply>), I do tend to find that the fluorescent tube lights found in some buildings can give me headaches, I recall a classroom with flickery lighting with a bright blue colour temperature giving me migraines.,(reply>), It's true, light bulbs do inhibit sleep, that's why we turn them off when we are going to sleep, ;-),(reply>), @sundhaug92 This isn't what the literature from the turn of the century is talking about when they mention "light health".