My subject line is a little humorous but it captures the essence of a new, potentially exciting medical advance.
Instead of tampering with DNA, the epigenome - the proteins that surround DNA and regulate DNA’s expression - might be altered with less risk. Tags that are added to to the epigenome over time may be causing aging and disease. Imagine if the crud could be vacuumed off?
https://www.nytimes.com/2026/09/08/science/epigenetic-editing.html
Can Geneticists Fight Disease by Targeting ‘Nurture’ Instead of ‘Nature’?
Traditional gene editing rewrites DNA. But a new approach, called epigenome editing, aims to treat the molecular scars we collect throughout our lives.
By Emily Baumgaertner Nunn, The New York Times, Sept. 8, 2026
…
Now, a new frontier in biotechnology aims to harness this natural mechanism to do something once thought impossible: scrub away the biological detritus of our own past. By mimicking Mother Nature’s magic eraser, geneticists are working to open a new avenue for treating or preventing disease later in life — not by editing genes themselves, but by altering when, where and how genes are expressed.
All of this is possible thanks to the epigenome, a network of chemical tags throughout the body that latch on to DNA and tell each cell type how to behave. If a person’s DNA is a string of notes in a musical score, the epigenome is the collection of the conductor’s pencil markings left on the page — accumulated through experience over time, indicating which notes to play louder or softer or to skip entirely.
Unlike the fixed genome, the epigenome changes, responding to external factors like chronic stress, poor diet, exposure to toxins or infections, and simple aging. …
At least 12 companies are already experimenting with the technique, and several have moved their tools into clinical trials. … [end quote]
This is a super-cool idea. Imagine being able to reverse a lifetime of harmful exposures with minimal risk.
I think this is on-topic for METAR because this could become a blockbuster niche for drug companies, similar to the GLP-1 drugs.
Wendy