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Dementia is a rapidly growing global health challenge affecting millions of people worldwide and placing significant economic, healthcare and social pressures on societies, particularly as populations age.
Families, community organisations and governments are facing growing difficulties in providing adequate care and support for older adults living with dementia. As the number of people affected continues to rise, the condition is becoming an increasingly urgent public health concern.
Dementia is a debilitating neurological condition caused by various diseases or injuries that damage the brain and impair its functioning. It can affect memory, thinking, communication, mood and behaviour, as well as a person’s ability to perform everyday activities. Symptoms generally worsen over time, often placing substantial emotional, physical and financial burdens on individuals, families, caregivers and health systems.
Dementia is not a normal part of ageing. Although some changes in memory and functioning are common among older adults, dementia can significantly impair memory, thinking, judgement and the ability to carry out everyday activities independently.
Dementia is the seventh leading cause of death worldwide and a major cause of disability and dependency among older adults. Alzheimer’s disease is the most common form, accounting for roughly 60–70% of all dementia cases. Other forms include vascular dementia, dementia with Lewy bodies, which is associated with abnormal protein deposits in nerve cells, and frontotemporal dementia, which involves degeneration of the brain’s frontal and temporal lobes.
The number of people living with dementia is rising rapidly as populations age and life expectancy increases.
According to the World Health Organization (WHO), approximately 57 million people were living with dementia in 2021, and the condition caused about two million deaths that year. Nearly 10 million new cases are recorded each year.
The number of people living with dementia is projected to rise to about 107 million by 2026 and more than 150 million by 2050, largely because of population ageing and increasing longevity.
This growing burden is placing additional pressure on healthcare systems, which must provide increasing levels of medical, social and long-term care. People with advanced dementia may require intensive, round-the-clock supervision and assistance with everyday activities, placing hospitals and long-term care facilities under further strain.
The economic cost extends well beyond direct medical and care expenses. Dementia can reduce productivity when people are no longer able to work and can also affect the employment of family members who reduce their working hours or leave jobs to provide unpaid care.
Women bear a disproportionate burden of dementia, experiencing higher levels of morbidity and disability than men. Women account for approximately two-thirds of deaths from Alzheimer’s disease and other forms of dementia worldwide and provide around 70% of informal care hours delivered by family members and friends.
Caregiving itself can have serious consequences. People caring for relatives with dementia face greater health risks than those caring for family members without dementia, and some of these risks can persist even after the death of the person they cared for.
Despite the considerable demands placed on families, communities and health systems, the global burden of dementia care remains largely underestimated.
Dementia can affect memory, thinking, communication, mood and behaviour. Early symptoms may involve difficulties with memory, attention, communication, reasoning, judgement and processing visual information.
Possible early signs include forgetting recent events or familiar information, getting lost while walking or driving, becoming confused in familiar places, having difficulty following conversations, forgetting the names of close family members or friends, using unusual words to refer to familiar objects and struggling to complete routine tasks independently.
Recognising these signs early can help families seek medical advice and plan appropriate care and support.
Although there is currently no known cure for dementia, there is growing evidence that some risk factors can be modified.
WHO guidelines indicate that up to 45% of dementia cases could potentially be prevented or delayed by addressing modifiable risk factors.
Recommended measures include staying physically active, eating a healthy diet, quitting smoking, limiting alcohol consumption, maintaining social connections and engaging in mentally stimulating activities. Cognitive training and stimulation, along with social activities, may also benefit adults with normal cognition or mild cognitive impairment.
Additional education has also been associated with a lower risk of dementia in some country studies, with the protective association extending beyond secondary education. This suggests that additional years of education may provide cumulative protection against cognitive decline.
Recent research has also indicated that hearing aids may reduce the rate of cognitive decline among older adults at high risk of dementia by nearly 50%.
Maintaining a healthy lifestyle, managing stress, keeping track of daily tasks and undergoing regular medical check-ups can also help people maintain independence and wellbeing.
Much can be done to improve the quality of life of people living with dementia and those who care for them. However, dementia caregiving can be demanding and can have a significant impact on caregivers’ physical and emotional wellbeing.
Effective caregiving requires patience, clear communication and attention to the person’s emotional needs. Discussing care requirements early, speaking calmly and clearly, avoiding arguments and providing reassurance can help reduce distress.
Caregivers can also distract an agitated person with a snack, photo album, humour or soothing music. Maintaining a consistent daily routine and familiar mealtime environment, encouraging independence and regular exercise, using written lists and reminders, simplifying choices and ensuring a safe living environment can all be helpful.
Caregivers should also prioritise their own wellbeing. The demands of dementia care can lead to emotional stress, physical exhaustion and burnout.
Taking regular breaks, seeking assistance from family members or others involved in care, maintaining social connections, exercising regularly and seeking mental health support when necessary can help reduce stress and exhaustion.
Age itself does not cause dementia, but it is the strongest known risk factor. The likelihood of developing dementia generally increases with age.
As a result, countries with older populations, including Japan, Germany, Italy and Greece, tend to report higher rates of dementia. This demographic trend highlights the need for governments to prepare healthcare and social support systems for an ageing population.
Dementia is no longer simply an individual or family health concern. Its rapid growth is creating significant social, economic and healthcare challenges for countries around the world.
With effective treatments still limited, comprehensive national strategies are urgently needed to prevent or delay dementia where possible and address its wider consequences.
Such strategies should take a coordinated and long-term approach, strengthening prevention, improving diagnosis and care, supporting caregivers and reducing the financial and social burden on families and health systems.
As populations continue to age, preparing for the growing burden of dementia must become an integral part of public health planning. The challenge is not only to help people live longer, but also to ensure that they can live those additional years with dignity, independence and quality of life. Source: IPS News