Search for "anti-aging" and you'll find creams, supplements, clinics and big promises. Search for cryonics and you'll find people who plan to be frozen after death. Both are about wanting more life, but they work in completely different ways. This guide explains the difference between anti-aging and cryonics, what the evidence actually says about each, and how to avoid wasting money.
The short version
| Anti-aging | Cryonics | |
|---|---|---|
| When it happens | While you're alive | After legal death |
| Goal | Look younger, or stay healthy longer | Be preserved in case future medicine can revive you |
| Proven to work? | Some basics, yes; most products, no | No one has ever been revived |
| Typical cost | From free (exercise) to thousands a year | Tens of thousands of dollars or more |
| Main risk | Wasted money, side effects | Paying for something that may never work |
What "anti-aging" really means
"Anti-aging" is a marketing word, not a medical one. It's used for three very different things.
1. Looking younger (skin and appearance)
This is the biggest part of the anti-aging market. A few things have solid evidence:
- Sunscreen and sun protection. Sun damage is one of the main causes of wrinkles and spots on the skin. Daily sunscreen helps prevent it.
- Not smoking. Smoking speeds up skin aging, along with much worse damage inside the body.
- Retinoids. Prescription retinoids such as tretinoin have good evidence for improving sun-damaged skin. A dermatologist can advise whether they suit you.
Most other creams and serums have weak evidence, and none of them slow aging inside your body. They work on the surface, at best.
2. Living healthier for longer (lifestyle)
The anti-aging steps with the strongest backing are ordinary ones: regular physical activity, not smoking, a mostly whole-food diet, good sleep, a healthy weight, limiting alcohol, staying socially connected and getting recommended screenings. They don't stop aging, but they lower the risk of the diseases that come with it. Our guide to longevity science covers these in more detail.
3. Slowing aging itself (research)
Scientists are studying whether aging can be slowed at the level of cells. Some promising leads in animals include:
- Rapamycin, which has extended lifespan in mice in well-run studies.
- Senolytics, drugs that clear out worn-out "zombie" cells, which have improved health in older mice.
- Partial cell reprogramming, which has reversed some signs of aging in mouse cells and tissues.
None of these is proven to slow aging in people. No drug is approved in the U.S. to treat aging itself. Clinics that sell these as anti-aging treatments today are getting ahead of the science.
Red flags in anti-aging products
- Claims to "reverse aging" or "add years to your life."
- Before-and-after photos instead of published studies.
- A "proprietary blend" with no doses listed.
- Pressure to buy a long subscription.
- Testimonials from people with a financial stake.
What cryonics is
Cryonics is the practice of cooling a person's body or brain to very low temperatures, usually in liquid nitrogen, soon after they are legally declared dead. The hope is that one day, medicine might be able to repair the damage, cure whatever caused the death, and bring the person back.
Key facts to know:
- It starts only after legal death. It isn't a treatment for living people.
- No one has ever been revived. It's a bet on future science that may never pay off.
- The process causes damage. Modern methods use chemicals to reduce ice formation, but repairing a preserved human is far beyond any technology that exists.
- It's expensive. Many people pay through life insurance. See how much cryonics costs.
Our guide on how cryonics works goes through the steps in plain English.
Anti-aging vs. cryonics: which makes sense?
They aren't really competitors. Anti-aging (in the healthy-lifestyle sense) is something nearly everyone can do now, and it has the best odds of giving you more good years. Cryonics is a long shot that a small number of people choose as a backup plan, after doing everything they can to live well.
A reasonable way to think about it:
- Start with the proven basics. They're cheap or free, and they work.
- Be skeptical of products. If a pill or cream really slowed aging, it would be the biggest medical news in history.
- If cryonics interests you, learn about it fully and talk to your family. It's a big decision with real costs.
- Either way, write down your wishes. Do you want any chance at revival someday, or not? Under what conditions?
A free middle step
Many people are curious about a second chance at life but aren't ready to pay for cryonics. Others are sure they would never want it. In both cases, your family will be better off if your answer is written down. Compare the options in cryonics vs. recording your wishes, or record your answer privately at the Revival Registry, where saving "not sure yet" costs nothing.