Health Facts vs. Myths: Detoxing, Water Intake and Liver Cleanses

Your liver and kidneys have been quietly doing the “detox” job your smoothie shop charges forty dollars for, and they’ve been doing it for free since the day you were born.

Quick Take

A TODAY segment featuring Dr. John Torres debunked popular myths about detoxing, daily water intake, and the 10,000-step rule.
Medical institutions including MD Anderson, Harvard Health, and the National Center for Complementary and Integrative Health back up the claim that the body detoxes itself naturally.
The famous “eight glasses a day” and “10,000 steps” rules trace back to old marketing and outdated studies, not hard science.
Juice cleanses and detox supplements can actually cause harm, including nutrient deficiencies and electrolyte imbalances.

What The TODAY Segment Actually Said

Dr. John Torres told TODAY viewers that the liver, kidneys, lungs, skin, and even the brain handle detoxing on their own, all day, every day. He warned that juice cleanses marketed as body resets can do more harm than good. The message wasn’t new, but it landed at a moment when detox teas and cleanse kits still line store shelves nationwide.

That claim isn’t just a TV talking point. MD Anderson Cancer Center states plainly that “your liver, kidneys, lungs and skin naturally remove waste and toxins without detox diets or cleanses.” The BBC’s medical review team reached the same conclusion, noting your organs handle the job “and don’t need any help” from powders or teas.

Why The Eight-Glasses Rule Never Held Water

Torres also took aim at the rigid rule that everyone needs eight glasses of water a day. He explained that rule traces back to a decades-old study, and much of the water your body needs actually comes from food, not just a glass. His practical advice: let thirst and pale urine be your guide, not a fixed number.

This lines up with wider nutrition research. Mayo Clinic Health System and other clinical sources have pushed back on one-size-fits-all hydration numbers for years, noting individual needs shift based on activity, climate, and diet. A slogan that fits neatly on a poster doesn’t always fit every body walking around America.

The 10,000-Step Number Came From A Marketing Campaign, Not A Lab

Here’s the part that should annoy anyone who’s ever felt guilty for missing their step goal. The 10,000-step target didn’t come from a landmark health study. It traces back to a 1965 Japanese pedometer marketing campaign, according to the TODAY segment. A product name, not a peer-reviewed finding, shaped decades of fitness-tracker pressure.

Torres recommended something less flashy but more grounded: consistency and gradual increases in activity, paired with the standard public-health guideline of 150 minutes of exercise a week. That’s a target backed by broad medical consensus, not a pedometer sales pitch from six decades ago.

Independent Medical Sources Back The Same Conclusions

This isn’t one doctor’s lone opinion. Harvard Health, MD Anderson, the BBC, Mayo Clinic Health System, and the National Center for Complementary and Integrative Health (NCCIH) all reach the same basic verdict on detox products. NCCIH points to a 2015 review finding “no compelling research” that detox diets remove toxins or manage weight long-term, and a 2017 review showing any early weight loss usually comes back.

Harvard Health goes further, warning that detox products can be outright dangerous, potentially causing kidney problems and infections in some users. MD Anderson lists nutrient deficiencies and electrolyte imbalances as real risks tied to fasting, juice cleanses, and unregulated supplements. These aren’t fringe warnings. They’re coming from some of the most respected names in American medicine.

Why This Keeps Coming Back Around

Detox marketing survives because it’s simple and satisfying. A product promises a hidden problem and a quick fix, and that’s an easier sell than the boring truth: eat real food, move regularly, sleep enough, and your organs will handle the rest. Segments like this one exist because the myths never fully go away, no matter how many times doctors correct them.

The takeaway here isn’t complicated, even if the wellness industry wants it to be. Skip the expensive cleanse, drink when you’re thirsty, walk when you can, and trust that the body you were born with is already doing the job some company wants to sell you.