This study aims to test whether it is possible to measure the handgrip strength of people with IBD attending outpatient's clinic. It also aims to test how the measure obtained compares with other methods of assessing whether someone is malnourished and their health. People with a diagnosis of IBD who are aged 18 or older and who are scheduled to attend IBD outpatients clinic in one hospital will be asked to take part in the study. Their handgrip strength will be measured each time they attend clinic over a nine-month period in addition to other information about their health and nutritional state. This study forms part of a Masters in Research being undertaken with The University of Southampton.