Actually, the risks come from handling the lead and touching your face, mouth, food and drink as well as your children. Chewing the lead is probably less risky than dealing with the dust. There are a number of documented cases of stained glass workers who were tested after years of work and high blood levels of lead were found. When habits were changed, levels went down. While working with lead came, lead based solders, cleaning soldering, handling windows, especially old windows being repaired, the hands should be washed frequently and use of latex gloves should be considered. The face should not be wiped with the hand to remove sweat or to clear the eyes and habitual moves of touching the chin in thought, resting the hand on the face, rubbing the forehead, rubbing the nose or eyelids in fatigue should be avoided. Food - sandwiches, fruit, etc. - must not be handled without thorough washing and not left around the shop waiting to be eaten. Cans or bottles of beverages which are drunk from directly and open glasses should not remain, full or empty, in the shop.