People may be missing out on early signs of illnesses such as kidney disease and dementia because of a lack of awareness of vital checks, a study has warned.

A study conducted by Healthwatch Norfolk has found that one of the main barriers to NHS health checks is that people have not received and invitation or do not know how they work.

The checks, which are available to eligible adults aged between 40 and 74, held spot early signs of stroke, kidney and heart disease, type 2 diabetes and dementia.

But the study found that of around 400 respondents, almost half (48pc) had not taken up NHS health checks - and of these 86pc said it was because they had not received an invitation.

The survey also found confusion around the purpose of the checks, with less than half of participants aware they can help detect signs of kidney disease and dementia.

Conversely, four out of 10 people incorrectly thought the checks test for signs of cancer, a quarter for arthritis and 31pc for mental health problems - none of which are included.

It also found a lack of awareness of types of places offering the checks - which includes places like leisure and community centres as well as GPs and other medical settings.

The findings have prompted the organisation, which represents patients in Norfolk, to call for improved communication around the checks.

Eastern Daily Press: Alex Stewart, chief executive of Healthwatch Norfolk. Picture: Denise BradleyAlex Stewart, chief executive of Healthwatch Norfolk. Picture: Denise Bradley (Image: Archant)

Alex Stewart, chief executive of Healthwatch Norfolk, said: "The key to improving effectiveness and success of NHS health checks is around communication.

"People need to have more of an understanding about their benefits, how they can take part, and where they are happening, as well as ensuring they are happening at times and locations that are convenient.

"There is no doubt these checks are a great tool in the battle to help keep us fit and health in Norfolk and, with some changes, can be even more effective in preventing serious illness."