You may not have heard of microplastics but you are surrounded by them.
Chewing gum, carpets, tea bags - they all contain these tiny fragments...and therefore, so do we.
There's growing research looking at the links between microplastics and dementia, fertility and certain cancers.
And now a private London clinic has developed a new treatment to remove them from your blood - but does it work?
Science Correspondent Martin Stew tells Lucy Watson what you need to know...
