Skip to main content

Dr Maëlenn Guerchet

Global Health Researcher


I am a global health researcher with a focus on ageing and dementia in sub-Saharan Africa.  

I have a background in Epidemiology and Biostatistics. My PhD, obtained in France (University of Limoges), focused on the assessment, prevalence and risk factors of dementia among older adults living in three-French speaking African countries (Benin, Central African Republic and Congo). Following my PhD, I carried out research in Central Africa, and extended my interest in comparing how the dementia epidemic affects African and other low- and middle-income countries in a world going through demographic, social and epidemiological transitions. 

Since I joined King’s in 2013, I have been a member of the 10/66 Dementia Research Group, which carries out population-based research into dementia, non-communicable diseases and ageing in low- and middle-income countries. I am involved in the most recent 10/66 studies: INDEP – a DfID/ESRC funded mixed methods cross-sectional survey assessing the social and economic impact of care dependence among older people in Latin America, Nigeria and China; and LIFE2YEARS – an ERC funded third wave prevalence and incidence surveys across eight Latin American countries and China.  

I have supervised three PhDs to completion focusing on different aspects of the epidemiology of dementia in Central Africa (University of Limoges) and aiming at estimating dementia prevalence in Kintampo, Rural Ghana (King’s College London). 


Research Interests 

  • Dementia in low- and middle-income countries 
  • Global Ageing 
  • Non-communicable diseases in sub-Saharan Africa 
  • Experiences of people with dementia 


  • Global Ageing and Dementia

Expertise and Public Engagement

Since 2013, I have contributed to several reports commissioned to the Global Observatory for Ageing and Dementia Care (King’s College London), published by Alzheimer’s Disease International (World Alzheimer Reports) and the UK Alzheimer’s Society (Dementia UK report update). I also led ADI’s report entitled ‘Dementia in sub-Saharan Africa: challenges and opportunities’. I am currently collaborating with the World Health Organization on their new Global Dementia Observatory.   

In 2018, I joined the Steering Group of the World Young Leaders in Dementia network (