When you exclude sugars and starches you have less oxidative free radicals. They are not absent from meat and dairy, just literally not needed in so great quantity.

I'd rather not take a chelator to reduce my lead intake if I can just change my diet to not include lead tainted things. Unfortunately, btw, that includes many sources of cacao fat, still. Most people don't even realize petroleum ethers are used and in poor countries, leaded gasoline. Not true, of course, of raw cacao nibs. All chocolate and cacao powders are likely to have trace lead. I don't know how much but it's been normal since the inception of the isolated cacao fat used to mix back with the defatted powder and wilk powder and sugar.