A recent meta-analysis led by University College London (UCL) researchers has revealed most people with dementia receive a diagnosis about 3.5 years after symptoms begin. For those with early-onset dementia, the delay is even greater—4.1 years. This extensive review, published in the International Journal of Geriatric Psychiatry, included data from over 30,000 participants across Europe, the US, Australia, and China.
Dr. Vasiliki Orgeta (UCL) explains, “Timely diagnosis of dementia remains a major global challenge, shaped by a complex set of factors, and specific healthcare strategies are urgently needed to improve it.” These delays not only hinder access to appropriate care but also reduce the time individuals can live with mild symptoms before the disease progresses. As Orgeta emphasises, “Timely diagnosis can improve access to treatments and for some people prolong the time living with mild dementia before symptoms worsen.”
Several key factors contribute to these delays:
- Symptoms mistaken for normal ageing
- Low public awareness and persistent stigma
- Inconsistent referral pathways
- Limited access to specialists
- Lack of culturally appropriate diagnostic tools
The study found that younger patients and those with frontotemporal dementia face even longer delays, and racial disparities may also play a role.
To reduce time to diagnosis, experts recommend action on multiple fronts. One key strategy is public awareness campaigns that:
- Help people recognise early symptoms
- Reduce stigma around dementia
- Encourage earlier help-seeking
To support this effort, the table below outlines common early symptoms of dementia and how they differ from normal ageing, based on evidence from the Alzheimer’s Association:
Early Signs of Dementia vs. Typical Ageing
(Source: Alzheimer’s Association, 2025)
| Signs of Dementia | Typical Age-Related Changes |
| Memory loss that disrupts daily life | Forgetting names or appointments, but remembering later |
| Difficulty planning or solving problems | Making occasional errors when managing bills |
| Trouble completing familiar tasks | Occasionally needing help with TV or microwave settings |
| Confusion with time or place | Getting confused about the day but figuring it out later |
| Trouble understanding visual images/spatial sense | Vision changes due to cataracts |
| New problems with words | Sometimes struggling to find the right word |
| Misplacing things, can’t retrace steps | Misplacing items occasionally, but able to retrace steps |
| Poor judgment | Making a bad decision once in a while |
| Withdrawal from work or social life | Sometimes feeling uninterested in social obligations |
| Mood and personality changes | Becoming irritable when routine is disrupted |
Let’s shorten the delay. Getting help early means people can stay independent for longer.
Associate Professor at University of Granada