Reusable water bottles have become more than just a practical item; they’re a global trend. According to an industry analysis by Grand View Research, the reusable water bottle market was worth around ...

Kayla Houlihan told TikTok she thinks mold in her bottle straw has been making her unwell.Iza Łysoń/500px/Getty Images. A TikToker said she found black mold in her reusable straw and thought it was ...

Many were concerned about possible mold intake, while others found her admission highly relatable. After going viral, she acknowledged her critics and appeared unfazed by their concerns. Earlier this ...

Even if you only fill your bottle with water, bacteria and mold can still grow inside — here’s how often and how thoroughly experts say you should wash it.