Pricey Dr. Blonz: Apart from contemporary and frozen greens, I usually use canned, particularly tomatoes. I purchase natural when out there, and periodically they’re imported. I recall lead solder was once utilized in many manufacturers of canned meals, primarily the imported ones. The sort of solder appeared particularly harmful for acidic meals like tomatoes. Does the truth that the can is hermetic make it safer, or are protecting substances added to make it so the meals gained’t react with the metallic? — F.S., San Jose, California
Cans was once made in three items: high, backside and the cylindrical physique, all soldered collectively into the acquainted form. Lead is a perfect soldering materials, however its use the place there could be contact with meals turned out to be dangerous enterprise after we realized of its poisonous results within the human physique. Lead is hazardous throughout being pregnant, infancy and childhood.