Aging is real, but an end to it probably isn't.
That is the key point to keep in mind as molecular biologist Bill Andrews says he may be able to produce an anti-aging pill — provided he can obtain enough funding. The idea is drawing attention because it is rooted in legitimate science about telomeres, the protective caps at the ends of chromosomes. But it also makes a much larger leap that scientists have not proved.
Here's what to know
A molecular biologist who founded and leads Sierra Sciences, Andrews has spent decades studying telomeres and telomerase, the enzyme that can restore those chromosome caps in some cell types.
According to Popular Mechanics, Andrews thinks sufficiently broad activation of telomerase could slow or reverse biological aging and ultimately result in a consumer pill.
That part of the biology is well established: in many cells, telomeres shorten as divisions accumulate, and that shortening is associated with cellular aging.
The 2009 Nobel Prize in Physiology or Medicine went to Elizabeth Blackburn, Carol Greider, and Jack W. Szostak, helping to further establish telomerase research as a major field of study.
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However, the stronger claim — that one pill could make people biologically young again — remains speculative.
Scientists generally understand aging as a complicated process involving multiple biological systems, not telomeres alone. Popular Mechanics also noted that raising telomerase activity could increase the risk of uncontrolled cell growth.
That concern is not merely hypothetical. A 2017 study in JAMA Oncology found that longer telomeres appeared linked to a higher risk for several cancers, including melanoma, ovarian cancer, and lung cancer.
More background
Andrews describes it directly.
He has said he already has a candidate compound, though it delivers only a fraction of the telomerase activity he is trying to achieve.
"Right now, it costs us $2 million a month to do this research, and we just never get that much funding," Andrews said, according to Popular Mechanics.
His broader theory is also far from universally accepted.
Biology does not neatly fit a simple telomere-aging model. In a 2018 study, one species of sea urchin was found to have telomeres that lengthen over time, while Myotis bats did not show telomere shortening with age despite not producing telomerase.
A major difference exists between promising lab research and a safe, effective therapy rigorously tested in humans.
Even supporters frame the work more narrowly. BioViva USA founder and CEO Liz Parrish said, "I believe more will need to be done to cure all of aging, but [Andrews's pill] should open the biggest bottleneck to a healthy life span."
What's being done?
Across the aging field, researchers continue studying telomeres alongside DNA repair, senescent cells, and other mechanisms that may affect how people age and how age-related disease develops.
That work could still lead to meaningful therapies, even if a single "cure for aging" never arrives. Andrews, however, remains convinced.
"My dream and hope [is that] it's a pill that people have to take once every 10 years," he said. "It will make us younger in every way imaginable — make us look, feel, and behave like we're 25 again."
Where can I learn more?
These stories dig into other findings and claims about biological aging, lifespan, and the factors that may shape how people age.
• Older adults reversed biological age in four weeks by cutting fat or adding plant-based carbs.
• A new study suggests turmeric may impact your aging process by supporting DNA health.
• A pioneering study is investigating whether microplastics can disrupt the aging process over time.
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