For today’s edition of Dear Mark, we’ve got a two-parter. First up is a question about a sensitive subject: the collective Primal love of all things egg. They form the backbone of millions of breakfasts across the ancestral health community on a daily basis, but David wonders if they might be contributing to colorectal carcinogenesis. There are a few studies that appear to suggest a connection; should we worry? After that, I discuss the effects of softened water on human health. Is it safe? Is it healthy? Read on to find out.