RT Eric Topol: The cancer-Alzheimer's paradox, an inverse correlation, with an unexplained mechanism "The risk of Alzheimer’s disease in patients wit...
A Nature article highlights the cancer-Alzheimer's paradox: people with cancer have a significantly reduced risk of Alzheimer's disease, and those with Alzheimer's have half the risk of developing cancer. The biological mechanism behind this inverse correlation remains unexplained.
Background
- Eric Topol is a prominent American physician-genomic scientist who popularizes medical research for a broad audience. Paul Graham (paulg) is a well-known startup investor and essayist — his retweet signals this finding is notable beyond medical circles.
- The "cancer-Alzheimer's paradox": multiple large population studies show people with cancer are significantly less likely to develop Alzheimer's, and Alzheimer's patients have roughly half the cancer risk. The mechanism is unknown.
- The linked paper (in *npj Aging*, a Nature journal) explores possible biological explanations: shared genetics (e.g., the PIN1 gene regulating both cell division and neurodegeneration), or opposing roles of programmed cell death — too little in cancer, too much in Alzheimer's.
- Why it matters: identifying the shared mechanism could open dual-purpose treatment pathways — drugs that might reduce risk of both diseases simultaneously.