4. Anxiety and Stress. In addition to causing physical problems, flickering lights can also lead to anxiety and stress. This is especially true if the flicker is constant or happens frequently. If you find flickering lights are causing you anxiety or stress, you must talk to your doctor or mental health professional.
Lead is a toxic metal that was once regularly used in the manufacturing of common household products and gasoline. There is no safe level of exposure to lead. Lead is a naturally occurring element and, unlike many pollutants, it does not go away over time. In the past, lead was added to gasoline, paints, water pipes, ceramic glazes, fertilizers Researchers tested the lead levels of 10 sets of indoor/outdoor Christmas lights, some recently purchased in Nebraska and New York, others from the 1970s. The researchers found detectable levels of lead in all of them; and all were above EPA/HUD regulatory limits for equivalent areas of windowsills and floors.
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Vintage and new items from discount stores may contain lead and can be especially dangerous for children, who often put their hands in their mouths after touching anything within reach.
2. If it's a metal box, and a metal light fixture, and the box is grounded. The fixture itself may indeed be grounded via contact with the fixture box, and/or through the screws holding the fixture to the box. This is by no means an acceptable alternative to an actual properly designed grounding system in the fixture, but it may be enough if it
Lead intoxication is called plumbism. Symptoms include belly pain, kidney damage and weakness in the extremities. Chronic exposure at high levels can cause infertility in males. Smaller doses can lead to miscarriage in pregnant women. The most serious risk of lead intoxication is in developing children.
