Tongue trend: Influencers including Renee Belz (main) and Luba Cohen (inset) have been hawking the benefits of the anti-fungal dye methylene blue. Instagram Doctors are slamming fitness influencers ...

A vibrantly-hued dye known as methylene blue has a long history of medical uses. And recently, it's getting rave reviews on social media for its reported anti-aging effects and ability to boost energy ...

Wellness enthusiasts seeking to hack their way to health and longevity have a new favorite remedy — one that stains their tongues blue. Methylene blue has been around since the 1870s when it was used ...

The internet is abuzz with tributes to a liquid chemical called methylene blue that is being sold as a health supplement. Over the past five or 10 years, methylene blue has come to be touted online as ...