671. Why Has There Been So Little Progress on Alzheimer’s Disease?

Decades of Alzheimer's research have been undermined by scientific fraud and a narrow focus on the amyloid hypothesis, despite its repeated failure in clinical trials. An investigation revealed manipulated data in foundational studies, casting doubt on the dominant theory that beta-amyloid plaques are the primary cause of Alzheimer's. Meanwhile, alternative pathways—like vascular contributions and environmental factors such as pollution and socioeconomic inequality—are gaining attention as potentially critical but long-overlooked drivers of the disease.

You get a rare exposé of systemic scientific failure in a high-stakes medical field, revealing how fraud and groupthink have delayed progress for millions.

1. 01A landmark 2006 paper supporting the amyloid hypothesis may be based on fabricated images, and the broader body of Alzheimer's research contains widespread data manipulation.
2. 02The dominant focus on amyloid plaques has diverted funding and attention from other promising avenues, such as vascular health, diet, and environmental exposures.
3. 03Alzheimer's prevalence is higher in populations exposed to pollution and socioeconomic disadvantage, suggesting structural and preventive factors are underemphasized in current research.