Researchers have conducted a comprehensive study to evaluate artificial intelligence based aging clocks, which predict health and lifespan using data from blood.
Researchers have conducted a comprehensive study to evaluate artificial intelligence based aging clocks, which predict health and lifespan using data from blood. Researchers at the Institute of Psychiatry, Psychology & Neuroscience at King's College London have conducted a comprehensive study to evaluate artificial intelligence based ageing clocks, which predict health and lifespan using data from blood.
The researchers trained and tested 17 machine learning algorithms using data on markers in the blood from over 225,000 UK Biobank participants, aged 40 to 69 years when they were recruited. They investigated how well different metabolomic ageing clocks predict lifespan and how robustly these clocks were associated with measures of health and ageing. A person's metabolomic age, their"MileAge," is a measure of how old their body seems to be on the inside based on markers in the blood called metabolites. Metabolites are small molecules that are produced during the process of metabolism, for example when food is broken down into energy. The difference between a person's metabolite-predicted age and their chronological age, termed MileAge delta, indicates whether their biological ageing is accelerated or decelerated.and is the first to comprehensively compare different machine learning algorithms on their ability to develop biological ageing clocks using metabolite data, leveraging one of the largest datasets globally. It was funded by the National Institute for Health and Care Research Maudsley Biomedical Research Centre and used data from the UK Biobank. Individuals with accelerated ageing were, on average, frailer, more likely to have a chronic illness, rated their health worse, and had a higher mortality risk. They also had shorter telomeres , which are a marker of cellular ageing and linked with age-related diseases such as atherosclerosis. However, decelerated biological ageing was only weakly linked with good health. Ageing clocks could help spot early signs of declining health, enabling preventative strategies and interventions before disease onset. They may also allow people to proactively track their health, make better lifestyle choices, and take steps to stay healthy for longer. Dr Julian Mutz, King's Prize Research Fellow at the IoPPN and lead author of the study, said:"Metabolomic ageing clocks have the potential to provide insights into who might be at greater risk of developing health problems later in life. Unlike chronological age, which cannot be changed, our biological age is potentially modifiable. These clocks provide a proxy measure of biological age for biomedical and health research, which could help shape lifestyle choices taken by individuals and inform preventative strategies implemented by health services. Our study evaluated a broad range of machine learning approaches for developing ageing clocks, showing that non-linear algorithms perform best at capturing ageing signals." Professor Cathryn Lewis, Professor of Genetic Epidemiology & Statistics, Co-Deputy Lead of the Trials, Genomics and Prediction theme at the NIHR Maudsley BRC, and senior author of the study, said:"There is substantial interest in developing ageing clocks that accurately assess our biological age. Powerful big data analytics can play a critical role in advancing these tools. This study is an important milestone in establishing the potential of biological ageing clocks and their ability to inform health choices." The researchers found that a metabolomic clock developed using a specific machine learning algorithm, called Cubist rule-based regression, was most strongly associated with most health and ageing markers. They also found that algorithms which can model non-linear relationships between metabolites and age generally performed best at capturing biological signal informative of health and lifespan.Aging clocks can measure the biological age of humans with high precision. Biological age can be influenced by environmental factors such as smoking or diet, thus deviating from the chronological age ... Artificial intelligence can predict which people who attend memory clinics will develop dementia within two years with 92 per cent accuracy, a largescale new study has concluded. Using data from more ... Scientists have built an artificial intelligence model that identifies chemical compounds that promote healthy aging - paving the way towards pharmaceutical innovations that extend a person's ... Researchers have developed an artificial intelligence diagnostic that can predict whether someone is likely to have COVID-19 based on their ...Swarms of 'Ant-Like' Robots Lift Heavy Objects and Hurl Themselves Over Obstacles Brain Cells Remain Healthy After a Month on the International Space Station, but Mature Faster Than Brain Cells on Earth
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