The Cancer Alzheimer’S Disease Paradox
It’s a curious observation in medicine: people who have been diagnosed with cancer seem to have a lower chance of developing Alzheimer’s disease, and similarly, those with Alzheimer’s appear to have a reduced risk of getting cancer. This unexpected inverse relationship suggests that these two major age-related diseases, despite their devastating impacts, might operate through fundamentally opposite biological mechanisms. For instance, cancer is characterized by cells that grow and multiply uncontrollably, often evading the body’s immune defenses. In contrast, Alzheimer’s disease involves the excessive death of brain cells and an overactive immune response that leads to inflammation. Recent research is exploring how these opposing cellular behaviors and immune system activities could explain this phenomenon. One intriguing idea is that substances released by tumors might actually help clear the harmful protein clumps that build up in the brains of Alzheimer’s patients, offering a potential protective effect.
Source: link to paper