No supplements and don't eat any processed meats except bacon and sometimes Bratwurst breakfast sausages (because they only have 1.1g carbs per two links). But perhaps, as you said, it is the bacon? But I don't eat it every day and my urine is quite dark.

But I don't feel unwell or anything it's just that I've noticed this change and though it might have something to do with the change in diet over a period of time.