The actor recently published a photo of himself undergoing a £ 10,000 procedure in a London clinic which claims to remove microplastics, chemicals forever and blood herbicides. But how much science is settled on the health risks of microplastics? To find out, Ian Sample speaks to Dr Stephanie Wright, an associate professor of environmental toxicology at the Imperial College Public Health School in London. She explains what we know so far about the effects of microplastics in the body, why science is still evolving and what we can do to reduce our exposure
