Glass straws are not “bad” by default, but they do come with some specific risks: mainly breakage and possible contamination with so‑called forever chemicals (PFAS) in some products.

Quick Scoop

  • Glass straws can chip or shatter , which may cut the lips, mouth, or throat, or leave invisible fragments in a drink if the damage is not noticed.
  • Some tested glass straws have been found to contain PFAS, persistent chemicals linked to health issues when they accumulate in the body over time.
  • Despite these concerns, many manufacturers and safety agencies still consider quality glass straws safe when used and inspected carefully, and they are more eco‑friendly than single‑use plastic.

Safety problems

  • Breakage risk : Even though many glass straws are made from tough borosilicate glass (similar to lab glassware or some cookware), they can still crack if dropped, knocked against hard surfaces, used in very hot or very cold extremes, or chewed on.
  • Injury from shards : If a straw cracks while in the mouth, it can cut soft tissues; if fragments are swallowed, larger pieces can damage the digestive tract and may require surgery.
  • Hidden chips : Tiny chips at the tip can be hard to see but still sharp, creating ongoing cut risk with repeated use.

Chemical concerns (PFAS)

  • A European study testing different reusable and disposable straw materials found PFAS (“forever chemicals”) in a portion of glass straws, likely from contaminated raw materials such as borosilicate glass.
  • PFAS are extremely persistent in the environment and in the body, and long‑term exposure has been associated with thyroid problems, high cholesterol, liver damage, some cancers, and reproductive issues.
  • The detected PFAS levels in straws were low, and occasional use is unlikely to cause immediate harm, but concern comes from cumulative exposure over years.

Are they really “bad”?

  • Many sustainability and product‑safety sources still describe glass straws as safe, non‑toxic, and inert when made from quality glass and used correctly, especially compared with plastic that can leach chemicals or shed microplastics.
  • They reduce single‑use plastic waste and avoid BPA or plasticizer exposure, which is why they became popular in eco‑friendly circles.
  • However, several recent viral stories and news pieces have pushed people to reconsider them because of dramatic injury cases and the general anxiety around PFAS in consumer products.

How to reduce the risks

  • Skip glass straws for children, people with limited motor control, or situations where drops and bumps are likely.
  • Inspect the straw often under good light; discard it if you see cracks, chips, or feel rough edges with your fingers.
  • Avoid chewing on the straw and avoid sudden temperature extremes (like boiling‑hot drinks in a cold straw).
  • If these risks feel unacceptable, consider stainless steel or silicone straws, which are generally seen as safer in terms of breakage, while still reducing plastic waste.

Information gathered from public forums or data available on the internet and portrayed here.