There has been a sharp increase in the number of adults who think they have attention deficit hyperactivity disorder (ADHD). The NHS has been overwhelmed by the number of patients looking for a diagnosis. Now thousands of people are turning to private clinics for assessment instead.

Panorama reporter Rory Carson poses as a patient to reveal some clinics charging large fees for a short online consultation, as well as evidence suggesting that diagnoses are being handed out to almost everyone who books an appointment.

The programme also reveals clinics prescribing powerful drugs without carrying out proper checks.

The UK is facing a chronic illness epidemic, with diabetes rates at record levels and cancers in young people rising steeply. Now, there's growing evidence suggesting this could be linked to the food we eat. Ultra-processed convenience foods contain chemicals that UK regulators say are safe, but Panorama investigates emerging scientific evidence of a link between some of these chemicals and cancer, diabetes and strokes.