It's not mine boggling at all. Our ability to detect lead only gets better and better with new technologies. Whereas a few decades ago we could detect 1 part

It's not mine boggling at all. Our ability to detect lead only gets better and better with new technologies. Whereas a few decades ago we could detect 1 part in 1 million (ppm) we can now routinely detect down to 1 part per 1 trillion (ppt), that's 1 million more sensitive analysis. To give a sense that's a 1 microgram in 1,000 tons of material. As a result, you can't set the level at "no lead" because that's an impossible level to achieve. Right now the US sets it at 10 parts per billion. So in a normal jar of baby food - approximately 100 grams - that's less than 0.1 microgram of lead. Lead naturally occurs in soil at levels 15-40 parts per million or 1,000 times higher. Growing your own veggies in soil untouched by man is going to risk higher levels than allowed in baby food.