Early Signs of Dementia: Productivity Losses Start 15 Years Before Diagnosis

According to a recent study published in Neurology, researchers analyzed data from 793 patients with early-onset dementia (EOD) and compared it with over 7,900 healthy individuals. The result indicates that professional losses can start up to 15 years before an official diagnosis.

Income Losses: An Alarming Figure

On average, the cumulative income loss per affected person amounts to €74,577 over a 15-year period leading up to diagnosis—equating to about €12,021 per year. Different types of dementia show varying patterns of productivity decline:

• Alzheimer’s: Productivity losses begin around six years prior to diagnosis, averaging €2,767 and rising to €11,431 by diagnosis.
• Frontotemporal Dementia (FTD): Earnings losses start 11 years before diagnosis, averaging €4,799, peaking at €16,116 upon diagnosis.
• Lewy Body Dementia: Significant economic impacts manifest only at the time of diagnosis, averaging €11,284.

Recognizing Risks Early

The NAKO Health Study, involving approximately 150,000 participants aged 20 to 75, demonstrates that cognitive risks can affect younger individuals. Findings published in Alzheimer’s & Dementia suggest that the LIBRA Index (Lifestyle for Brain Health) correlates with cognitive performance even in those aged 20 to 39.

Warning signs, such as forgetfulness or declining concentration, often unsettle those affected. An anonymous seven-question self-test can provide a quick assessment of whether symptoms might indicate early dementia. Start the free 2-minute self-test here

Higher index scores, indicating a less healthy lifestyle, correlate with poorer cognitive performance across all age groups. Among younger adults, psychosocial factors such as smoking, lack of exercise, and depression take precedence, while older individuals primarily face cardiovascular risk factors.

Advancements in Blood Testing

Significant progress in laboratory medicine includes the CE certification of two blood tests based on the biomarker p-tau217, which was granted in May 2026. Priced around CHF 50 in Switzerland, these tests are currently intended for individuals displaying existing symptoms.

However, the potential of these tests extends further. Data from the AAIC conference in London and from JAMA (July 2026) indicates that p-tau217 shows high prognostic value even in symptom-free older adults (average age 70). In subjects with very high levels, the likelihood of cognitive impairment within a decade reached 78%. According to study authors, these tests provide additional valuable information beyond brain scans and genetic testing.

WHO’s Recommendations: Addressing Modifyable Risk Factors

The World Health Organization (WHO) updated its guidelines on July 15, 2026, highlighting that up to 45% of dementia risk can be influenced by modifiable factors. Approximately 57 million people worldwide are affected.

Since a considerable portion of dementia risk is lifestyle-related, simple preventive measures gain immense significance. This free guide introduces 11 practical exercises and dietary tips that can help maintain cognitive fitness well into old age. Download the free guide for mental fitness now

For the first time, the WHO explicitly recommends social activities, hearing aids for hearing loss, and reduced air pollution as preventive measures. Physical activity and cognitive stimulation remain central, as does managing hypertension, diabetes, and sleep disorders. Conversely, no benefits have been proven for vitamin supplements in reducing risk.