By combining existing 30 years of data on environmental exposures (social, behavioural, cardiometabolic, inflammatory) and chronic disease among with repeat assessment of cognitive and motor function (5 measures from 1997 to 2015) Whitehall II is uniquely positioned internationally to disability and dementia.
Current Research on Ageing
Ageing is not characterised by universal decline. Rather, variations in the speed of ageing result in people of the same age becoming increasingly dissimilar in terms of cognitive capability, mental and physical health and functioning over time.
Understanding the causes of this age-related individual heterogeneity and its distribution by social group is the core focus of our current work.
In addition to providing insights into individual and social differences in the development of frailty, disability, dependence, and dementia, our work enables the determination of optimal time windows and targets for interventions that maximize the potential for healthy-ageing and independent living.
Our recent research highlights are:
- Generalizability of Whitehall II findings
As Whitehall II is an occupational cohort study, prevalence of risk factors and incidence of disease are lower than the general population. Nevertheless, the associations between causal risk factors and disease in Whitehall II are similar to those in the population-based British Regional Heart Study (Batty et al, Epidemiology 2014).
Whitehall II has contributed to >100 research consortia papers and the results have been consistent with summary estimates from other studies. Thus, the causal risk factor-health outcome associations observed in Whitehall II are very likely to be generalizable, applicable to the UK and other developed countries.
See for example how Whitehall II results compare to other studies in the graph below, which shows the inverse association between socioeconomic status and mortality in Whitehall II and 45 other cohort studies from Europe, the US and Asia (Stringhini et al. Lancet 2017)
- Cognitive Ageing and Dementia
The unique feature of the Whitehall II cognitive data is assessment starting at age 45, allowing us to study the social, behavioural and biological determinants of heterogeneity in cognitive decline, starting in midlife and dementia.
- Trajectories of Depressive Symptoms Before Diagnosis of Dementia: A 28-Year Follow-up Study. Singh-Manoux A, Dugravot A, Fournier A, Abell J, Ebmeier K, Kivimäki M, Sabia S. JAMA Psychiatry. 2017 May 17 [Epub ahead of print]
- Atrial fibrillation as a risk factor for cognitive decline and dementia. Singh-Manoux A, Fayosse A, Sabia S, Canonico M, Bobak M, Elbaz A, Kivimäki M, Dugravot A. Eur Heart J. 2017 Apr 29 [Epub ahead of print]
- Midlife type 2 diabetes and poor glycaemic control as risk factors for cognitive decline in early old age: a post-hoc analysis of the Whitehall II cohort study. Tuligenga RH, Dugravot A, Tabák AG, Elbaz A, Brunner EJ, Kivimäki M, Singh-Manoux A. Lancet Diabetes Endocrinol. 2014; 2: 228-35.
- Midlife stroke risk and cognitive decline: a 10-year follow-up of the Whitehall II cohort study. Kaffashian S, Dugravot A, Brunner EJ, Sabia S, Ankri J, Kivimäki M, Singh-Manoux A. Alzheimers Dement. 2013; 9: 572-9.
- Impact of smoking on cognitive decline in early old age: the Whitehall II cohort study. Sabia S, Elbaz A, Dugravot A, Head J, Shipley M, Hagger-Johnson G, Kivimaki M, Singh-Manoux A. Arch Gen Psychiatry. 2012; 69: 627-35.
- Timing of onset of cognitive decline: results from Whitehall II prospective cohort study. Singh-Manoux A, Kivimaki M, Glymour MM, Elbaz A, Berr C, Ebmeier KP, Ferrie JE, Dugravot A. BMJ. 2012; 344:d7622.
- Does cognitive reserve shape cognitive decline? Singh-Manoux A, Marmot MG, Glymour M, Sabia S, Kivimäki M, Dugravot A. Ann Neurol. 2011; 70: 296-304.
- Cardiometabolic Health
Whitehall II has collected an unrivalled set of multiple repeat measures over 30 years of follow-up, complementing our cardiovascular morbidity and mortality follow-up. For example, blood pressure and body mass index have been measured on 7 occasions and oral glucose tolerance on 4 occasions. Our longitudinal studies of diabetes development have attracted much attention.
The causes and consequences of aortic stiffening is a novel focus of our cardiometabolic research, which is also relevant to those interested in interventions to reduce vascular ageing. Whitehall II has now collected three measures of carotid-femoral pulse wave velocity.
- Incidence of Metabolic Risk Factors Among Healthy Obese Adults: 20-Year Follow-Up. Bell JA, Hamer M, Batty GD, Singh-Manoux A, Sabia S, Kivimäki M. J Am Coll Cardiol. 2015 Aug 18;66(7):871-3.
- The natural course of healthy obesity over 20 years. Bell JA, Hamer M, Sabia S, Singh-Manoux A, Batty GD, Kivimaki M. J Am Coll Cardiol. 2015 Jan 6;65(1):101-2.
- Adiposity, Obesity, and Arterial Aging: Longitudinal Study of Aortic Stiffness in the Whitehall II Cohort. Brunner EJ, Shipley MJ, Ahmadi-Abhari S, Tabak AG, McEniery CM, Wilkinson IB, Marmot MG, Singh-Manoux A, Kivimaki M. Hypertension. 2015; 66(2): 294-300.
- Patterns of obesity development before the diagnosis of type 2 diabetes: the Whitehall II cohort study. Vistisen D, Witte DR, Tabák AG, Herder C, Brunner EJ, Kivimäki M, Færch K.PLoS Med. 2014; 11: e1001602.
- Prediabetes: a high-risk state for diabetes development. Tabák AG, Herder C, Rathmann W, Brunner EJ, Kivimäki M. Lancet. 2012;379: 2279-90.
- Physical activity and inflammatory markers over 10 years: follow-up in men and women from the Whitehall II cohort study. Hamer M, Sabia S, Batty GD, Shipley MJ, Tabák AG, Singh-Manoux A, Kivimaki M. Circulation. 2012; 126: 928-33.
- Arterial stiffness, physical function, and functional limitation: the Whitehall II Study. Brunner EJ, Shipley MJ, Witte DR, Singh-Manoux A, Britton AR, Tabak AG, McEniery CM, Wilkinson IB, Kivimaki M. Hypertension. 2011; 57: 1003-9.
- Association of diurnal patterns in salivary cortisol with all-cause and cardiovascular mortality: findings from the Whitehall II study. Kumari M, Shipley M, Stafford M, Kivimaki M. J Clin Endocrinol Metab. 2011; 96: 1478-85.
- Trajectories of glycaemia, insulin sensitivity, and insulin secretion before diagnosis of type 2 diabetes: an analysis from the Whitehall II study. Tabák AG, Jokela M, Akbaraly TN, Brunner EJ, Kivimäki M, Witte DR. Lancet. 2009; 373: 2215-21.
- Physical Functioning and Mental Health
A major aim of our research is to identify midlife risk factors and protective factors for old-age functional limitations and depression. In addition to social circumstances, lifestyle and chronic diseases, we examine the role of biological factors, such as low-grade inflammation, in predicting functioning and mental well-being at older ages.
- Healthy obesity and risk of accelerated functional decline and disability. Bell JA, Sabia S, Singh-Manoux A, Hamer M, Kivimäki M. Int J Obes (Lond). 2017 Mar 14. Epub ahead of print]
- Midlife Risk Factors for Impaired Physical and Cognitive Functioning at Older Ages: A Cohort Study. Brunner EJ, Welch CA, Shipley MJ, Ahmadi-Abhari S, Singh-Manoux A, Kivimäki M. J Gerontol A Biol Sci Med Sci. 2017 Feb;72(2):237-242
- Trajectories of Unhealthy Behaviors in Midlife and Risk of Disability at Older Ages in the Whitehall II Cohort Study. Artaud F, Sabia S, Dugravot A, Kivimaki M, Singh-Manoux A, Elbaz A. J Gerontol A Biol Sci Med Sci. 2016 Nov;71(11):1500-1506.
- Long-term inflammation increases risk of common mental disorder: a cohort study. Kivimäki M, Shipley MJ, Batty GD, Hamer M, Akbaraly TN, Kumari M, Jokela M, Virtanen M, Lowe GD, Ebmeier KP, Brunner EJ, Singh-Manoux A. Mol Psychiatry. 2014; 19: 149-50.
- Association of metabolically healthy obesity with depressive symptoms: pooled analysis of eight studies. Jokela M, Hamer M, Singh-Manoux A, Batty GD, Kivimäki M. Mol Psychiatry. 2014; 19: 910-4.
- Depression and type 2 diabetes: a causal association? Tabák AG, Akbaraly TN, Batty GD, Kivimäki M. Lancet Diabetes Endocrinol. 2014; 2: 236-45.
- Trajectories of the Framingham general cardiovascular risk profile in midlife and poor motor function later in life: the Whitehall II study. Elbaz A, Shipley MJ, Nabi H, Brunner EJ, Kivimaki M, Singh-Manoux A. Int J Cardiol. 2014; 172: 96-102.
- Cumulative associations between midlife health behaviors and physical functioning in early old age: a 17-year prospective cohort study. Sabia S, Elbaz A, Rouveau N, Brunner EJ, Kivimaki M, Singh-Manoux A. J Am Geriatr Soc. 2014; 62: 1860-8.
- Vascular risk status as a predictor of later-life depressive symptoms: a cohort study. Kivimäki M, Shipley MJ, Allan CL, Sexton CE, Jokela M, Virtanen M, Tiemeier H, Ebmeier KP, Singh-Manoux A. Biol Psychiatry. 2012; 72: 324-30.
- Common mental disorder and obesity: insight from four repeat measures over 19 years: prospective Whitehall II cohort study. Kivimäki M, Lawlor DA, Singh-Manoux A, Batty GD, Ferrie JE, Shipley MJ, Nabi H, Sabia S, Marmot MG, Jokela M. BMJ. 2009; 339: b3765.
- Socioeconomic and occupational stressors
Biological, environmental and lifestyle factors explaining differences in health between people from different socioeconomic circumstances have been a key research area for Whitehall II since the beginning of the study. Our findings have had a strong impact on health policy nationally and internationally. To understand the health effects of workplace factors, such as work stress, we have combined data from Whitehall II to those from other cohort studies.
- Socioeconomic status and the 25 × 25 risk factors as determinants of premature mortality: a multicohort study and meta-analysis of 1·7 million men and women. Stringhini S, Carmeli C, Jokela M, Avendaño M, Muennig P, Guida F, Ricceri F, d'Errico A, Barros H, Bochud M, Chadeau-Hyam M, Clavel-Chapelon F, Costa G, Delpierre C, Fraga S, Goldberg M, Giles GG, Krogh V, Kelly-Irving M, Layte R, Lasserre AM, Marmot MG, Preisig M, Shipley MJ, Vollenweider P, Zins M, Kawachi I, Steptoe A, Mackenbach JP, Vineis P, Kivimäki M; LIFEPATH consortium. Lancet. 2017.
- Long working hours and risk of coronary heart disease and stroke: a systematic review and meta-analysis of published and unpublished data for 603,838 individuals. Kivimäki M, Jokela M, Nyberg ST, Singh-Manoux A, Fransson EI, Alfredsson L, Bjorner JB, Borritz M, Burr H, Casini A, Clays E, De Bacquer D, Dragano N, Erbel R, Geuskens GA, Hamer M, Hooftman WE, Houtman IL, Jöckel KH, Kittel F, Knutsson A, Koskenvuo M, Lunau T, Madsen IE, Nielsen ML, Nordin M, Oksanen T, Pejtersen JH, Pentti J, Rugulies R, Salo P, Shipley MJ, Siegrist J, Steptoe A, Suominen SB, Theorell T, Vahtera J, Westerholm PJ, Westerlund H, O'Reilly D, Kumari M, Batty GD, Ferrie JE, Virtanen M; IPD-Work Consortium. Lancet. 2015 Oct 31;386(10005):1739-46.
- Association of lifecourse socioeconomic status with chronic inflammation and type 2 diabetes risk: the Whitehall II prospective cohort study. Stringhini S, Batty GD, Bovet P, Shipley MJ, Marmot MG, Kumari M, Tabak AG, Kivimäki M. PLoS Med. 2013; 10: e1001479.
- Job strain as a risk factor for coronary heart disease: a collaborative meta-analysis of individual participant data. Kivimäki M, Nyberg ST, Batty GD, Fransson EI, Heikkilä K, Alfredsson L, Bjorner JB, Borritz M, Burr H, Casini A, Clays E, De Bacquer D, Dragano N, Ferrie JE, Geuskens GA, Goldberg M, Hamer M, Hooftman WE, Houtman IL, Joensuu M, Jokela M, Kittel F, Knutsson A, Koskenvuo M, Koskinen A, Kouvonen A, Kumari M, Madsen IE, Marmot MG, Nielsen ML, Nordin M, Oksanen T, Pentti J, Rugulies R, Salo P, Siegrist J, Singh-Manoux A, Suominen SB, Väänänen A, Vahtera J, Virtanen M, Westerholm PJ, Westerlund H, Zins M, Steptoe A, Theorell T; IPD-Work Consortium. Lancet. 2012; 380: 1491-7.
- Contribution of modifiable risk factors to social inequalities in type 2 diabetes: prospective Whitehall II cohort study. Stringhini S, Tabak AG, Akbaraly TN, Sabia S, Shipley MJ, Marmot MG, Brunner EJ, Batty GD, Bovet P, Kivimäki M. BMJ. 2012; 345: e5452.
- Association of socioeconomic position with health behaviors and mortality. Stringhini S, Sabia S, Shipley M, Brunner E, Nabi H, Kivimaki M, Singh-Manoux A. JAMA. 2010; 303: 1159-66.