Everyone’s bowel habits are different. Some people poop like clockwork: every day at the same time. Others go more sporadically, like a few times a week. Doctors say it’s crucial to know what’s normal ...

At this point in life, you likely have a good idea of what your average bowel movements look like. So if you happen to notice they’re darker than usual, it’s understandable to wonder, “Why is my poop ...