Lead poisoning occurs when too much lead gets into the body. Lead can enter through the body when you breathe, eat or drink something contaminated with lead. Lead-based paint in older homes and buildings are the most common sources of lead poisoning. Lead paint was banned in 1978, but if your home was built before then, you could be at risk. Other sources of lead exposure are contaminated air, lead pipes, drinking water, soil, and products imported from other countries such as jewelry, toys, spices, traditional medicines, pottery, and cosmetics.