For today’s edition of Dear Mark, I’m answering three questions from readers. First, what’s the deal with lead in crock pots? Some say lead leaches into the food when we cook with crock pots, while others aren’t so sure. And if the leaching of lead from crock pot ceramics into our food is, indeed, a problem, what equivalent product do I recommend? Next, a new study indicates that human norovirus is highly prevalent in oysters. Should we stop eating the canned smoked oysters from Crown Prince? And finally, do we really need to consume extra carbs with our creatine to get the full benefits?