By Emma Spencer, Science & Technology Reporter

Reverse aging. You’ve probably heard of it before. Usually it’s a commercial for a skin cream or an ad for a cosmetic procedure. But the truth is you can’t reverse aging with a jar of cream. You can reduce the appearance of it with creams or surgery, but that’s more like putting fresh paint on the same house. Underneath, you still have a structure that’s aging and systems showing the signs of wear and tear with time.

Now, thanks in large part to billionaires who are afraid of dying, research into reverse aging is moving faster than ever. Should you get excited? Maybe. Some of it’s promising, and it could eventually deliver real results. However, serious side effects are connected to some of the therapies. That’s why many experts continue to urge people to stick with the tried-and-true ways of staying younger longer — healthy diet, exercise, and getting enough sleep.

Here’s where the science actually stands in 2026.

The most talked-about approach is called partial cellular reprogramming. Scientists use a handful of genes, often three specialized proteins called the “Yamanaka factors,” so named for famous Nobel Prize winning scientist Dr. Shinya Yamanaka, known for his research into stem cells at Kyoto University. These proteins are used to essentially reset parts of a cell’s operating system without turning the cell all the way back into a stem cell.

In mice, this therapy has restored vision in old animals, improved liver function, and reversed some aging markers in muscle and blood-forming stem cells. Researchers have shown that certain age-related changes in DNA organization and cell behavior can be dialed back.

This summer, the first human trial of this approach began. A company called Life Biosciences treated its first patient with a gene therapy designed to partially reprogram cells in the eye. The target is glaucoma and related optic-nerve damage. The eye was chosen partly because any problems would stay relatively contained. Early animal work looked promising and no serious side effects showed up in monkeys, but this is still a Phase 1 safety trial. Results won’t be clear for a while.

Other research is moving in parallel. Scientists have found ways to rejuvenate old muscle stem cells by restoring a key antioxidant called glutathione. Teams have reversed aging signs in blood stem cells by fixing problems inside the cell’s waste-disposal system. Senolytic drugs, which are designed to destroy “zombie” cells that cause aging, continue to move through human trials. These drugs can treat conditions like frailty, kidney disease, and early cognitive decline. Early safety data looks acceptable, but conclusive evidence of lasting benefits in healthy people remains to be established.

All of this is legitimately exciting. Could aging in cells be reversed the same way a computer program can be restored to an earlier point in time? The data suggests the answer may be yes.

However, the risks are real and not to be taken lightly. Full or uncontrolled cellular reprogramming can may cause cancer. Experts like Matt Kaeberlein have said the technology is still early and the potential for serious side effects is high.

So what should regular people do with this information? Most researchers still land in the same place: the best tools we have right now for staying younger longer are the boring ones. Eat real food. Move your body. Sleep enough. Don’t smoke or drink excessively. Healthy habits won’t reverse the clock, but they slow the damage and keep the structure of the house from falling apart as fast.

The billionaire-funded labs will keep pushing, and some of what they’re learning will eventually help people with certain specific diseases. The advances occuring are real, but there’s still a long road ahead before age reversal treatments could be broadly available.

For now, the smartest move is still the simplest one. Drink water, get enough sleep, and eat healthy food.