A colonic—also called colon hydrotherapy—involves flushing the colon with warm, filtered water through a small tube inserted into the rectum. Practitioners claim it removes built-up waste, toxins, and ...

It’s not hard to feel filthy, even when you are, by most objective measures, perfectly clean: showered and laundered and trimmed, plucked, groomed, and buffed. Who knows what lurks beneath, in your ...