Alzheimer's disease is a progressive neurodegenerative disorder and the most common cause of dementia. It gradually destroys memory and thinking skills, eventually affecting the ability to carry out daily tasks.
Alzheimer's disease affects approximately 55 million people worldwide, a number projected to nearly triple by 2050. It is the most common form of dementia, accounting for 60–80% of cases.
The disease is characterised by the accumulation of amyloid plaques and tau tangles in the brain, leading to progressive neuronal damage and death. These changes begin years or decades before symptoms appear.
While there is no cure, recent advances in anti-amyloid therapies represent a new era in treatment. Early diagnosis is increasingly important as disease-modifying treatments become available.
People with Alzheimer's Disease often experience the following symptoms.
Forgetting recently learned information is often the earliest symptom. Important dates, events, and conversations are lost, with increasing reliance on memory aids.
Difficulty with planning, organising, problem-solving, and managing finances. Following recipes or keeping track of bills becomes challenging.
Problems with depth perception, judging distance, reading, and navigating familiar routes. May lead to difficulty driving.
Personality shifts including apathy, social withdrawal, anxiety, agitation, suspiciousness, and sometimes delusions or hallucinations in later stages.
Certain factors may increase your likelihood of developing Alzheimer's Disease.
Common approaches to managing alzheimer's disease. Always consult a healthcare provider for personalized treatment.
Donepezil, rivastigmine, and galantamine boost levels of acetylcholine in the brain, providing modest symptomatic improvement.
Newer monoclonal antibodies (lecanemab, donanemab) target and remove amyloid plaques, slowing cognitive decline in early-stage disease.
Regulates glutamate activity and may improve cognition and function in moderate to severe Alzheimer's disease.
Structured routines, cognitive stimulation, physical exercise, caregiver support, and management of behavioural symptoms with appropriate interventions.
Diagnosis involves cognitive testing (MMSE, MoCA), brain imaging (MRI, PET scans for amyloid and tau), and cerebrospinal fluid or blood biomarker testing. A thorough evaluation rules out other treatable causes of cognitive decline.
Consult a doctor if you or a loved one experiences persistent memory problems that are worsening, difficulty with familiar tasks, confusion, or personality changes that interfere with daily life.
Steps that may help reduce the risk of developing or worsening alzheimer's disease.
Regular physical exercise
Cardiovascular risk factor management
Cognitive and social engagement
Healthy Mediterranean-style diet
If left untreated or poorly managed, alzheimer's disease may lead to:
Most cases are not directly inherited. Having a parent with Alzheimer's increases your risk, particularly if they carry the APOE-e4 gene variant, but it does not mean you will definitely develop the disease.
Dementia is an umbrella term for severe cognitive decline. Alzheimer's is the most common specific disease that causes dementia. Other causes include vascular dementia, Lewy body dementia, and frontotemporal dementia.
While there is no guaranteed prevention, research suggests that regular exercise, managing cardiovascular risk factors, staying mentally and socially active, and maintaining a healthy diet may reduce risk.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.