Why are food allergies on the rise and is a cure on the horizon?

Food allergies appear to be increasing globally, but as scientific
understanding improves, some experts believe we may one day be able
to eliminate them altogether. Ian Sample speaks to Dr Kari Nadeau,
an allergy specialist at Harvard School of Public Health and author
of the book The End of Food Allergy, to discuss why food allergies
are on the rise and what we can do to prevent – and possibly even
cure – them. Help support our independent journalism at
theguardian.com/sciencepod