Scientists have made significant strides in understanding how our bodies age, largely due to over a billion scans carried out on volunteers from the UK. This initiative, touted as the largest human imaging project globally, has reached its milestone of scanning 100,000 individuals’ brains, hearts, and various organs, wrapping up an ambitious 11-year effort.
According to Prof. Naomi Allen, chief scientist at UK Biobank, researchers are already leveraging the imaging data, combined with other information, to detect diseases early and target treatments sooner. This data is available at a low cost to teams worldwide to develop new strategies for preventing common health issues, ranging from heart problems to cancer.
The 100,000th volunteer, named Steve, recently retired from sales and now assists at a charity run by his daughter. He participated in the imaging process at a facility outside Reading, where detailed scans of his brain cells, blood vessels, bones, and joints were taken. Reflecting on his motivation, he shared, “My mum was diagnosed with early-stage dementia a few years ago, so with that in mind, I want to contribute to research for future generations.”
This massive healthcare imaging project has been operational for around 13 hours daily, seven days a week, across four locations in England. Scanning appointments for participants last about five hours and involve various MRI, X-ray, and ultrasound machines. It’s important to note that the data collected is anonymized; volunteers, like Steve, don’t receive personal feedback unless health issues are detected during the scans.
Launched in 2003, UK Biobank stands as one of the largest repositories of health data and biological samples globally. It has engaged half a million middle-aged volunteers who have undergone physical exams, responded to health surveys, and provided DNA and biological samples. These samples, including blood, urine, and saliva, are stored at ultra-low temperatures in facilities in Greater Manchester.
The imaging segment of this endeavor began in 2014, with plans to invite the participants back periodically to monitor how their health and physiology evolve with age. By merging these scans with existing data, scientists aim to determine whether early changes in health could lead to diseases later in life.
Funded by the Medical Research Council, the Wellcome Trust charity, Department of Health, and the Scottish government, the UK Biobank project is non-profit. Now maturing after two decades, it has amassed over 30 petabytes of health data accessible to researchers from various sectors, with typical fees ranging from £3,000 to £9,000 applied for access.
Louise Thomas, a professor of metabolic imaging at the University of Westminster, mentioned how the project is “completely transforming” research methods. Initially, there were doubts about its feasibility, but now, she notes that the technology allows for quick, comprehensive data extraction, enabling researchers to process the images in mere minutes. Increasingly, artificial intelligence is being utilized to handle the vast amounts of generated data.
To date, nearly 1,700 peer-reviewed papers have utilized Biobank data since its inception, with additional publications surfacing weekly. The scans conducted thus far have demonstrated that UK Biobank is among the top 10 largest repositories of personal health data globally, alongside similar initiatives in Germany, China, and the United States. However, not all these projects share their data with a global audience in the same manner.
The imaging portion of UK Biobank benefits from further funding by organizations like the British Heart Foundation, Calico (a subsidiary of Alphabet), and the Chan Zuckerberg Initiative, which was founded by Facebook’s Mark Zuckerberg and Priscilla Chan.
