Brain scanning study in ex-smokers and quitting smokers – participants wanted

The Division of Brain Sciences, Imperial College London at the Hammersmith Hospital, London is studying how the brain and hormones control eating and addictive behaviours in the GHADD study.

Volunteers will have functional magnetic resonance imaging (fMRI) brain scans, and an infusion of 2 different hormones to see how the brain responds.

The hormones have been safely administered in many previous studies.

There is a health screening visit, followed by 3 study visits.

To take part you must be aged 18 to 60 years old, have given up smoking cigarettes within the last year, or be just about to give up smoking cigarettes or vaping e-cigarettes.

You will NOT be able to take part if you:

  • are vegetarian, vegan, gluten or lactose intolerant
  • have a pacemaker, or some types of metal implants and clips
  • are claustrophobic, pregnant or breast feeding

You will be paid expenses including travel costs.

Please check our quick online screening tool on to see if you may be eligible

If interested, please contact us at: 020 7594 6648 or

Approved by Local Ethics Research Committee (REC 15/LO/1041)

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