Will a doctor prescribe rapamycin?
Most doctors will not prescribe rapamycin to healthy people to slow ageing, simply because the evidence for doing so is still lacking. For certain rare conditions a specialist may consider it off-label, but always with a careful weighing of the risks.
Most doctors will not readily prescribe rapamycin (also known as sirolimus) simply because you want to age more healthily. The American College of Clinical Pharmacology states explicitly that no regulatory approval exists for that application, and that the necessary clinical evidence is lacking. Doctors who do consider prescribing it are required to inform you fully about this.
Even so, a small group of doctors already does prescribe it, so-called off-label, outside the official indications. A survey of 333 users raised no acute red flags, but that is not a randomised trial: the data are self-reports without a control group. Whether it actually slows ageing in healthy people has not yet been demonstrated in humans. In animals the results are impressive, but in humans the outcomes of clinical studies have so far been disappointing or remain unclear.
For certain rare conditions the picture is different. In 16 children with rare immunological or growth disorders, the condition of 14 of them improved noticeably after treatment with sirolimus; the dose was low. One child stopped because of a bacterial pneumonia. This shows that the substance is not without risk: disruption of the immune system is a genuine side-effect profile. In venous malformations (a rare abnormality of blood vessels), 72 percent of the 98 described patients saw some improvement, although this was based on small series and case reports.
Topically applied sirolimus for certain skin conditions looks promising and results in hardly any absorption into the bloodstream, but those studies are also small and not yet standardised.
In short: for a recognised rare condition, a specialist may consider sirolimus off-label, albeit with caution. For healthy people who want to slow their ageing, prescribing it is not the current norm and most doctors will not do so.
Sources include reviews, a systematic review and one survey study (n=333). No randomised controlled trial on rapamycin in healthy adults for ageing is available in this set. The data on rare conditions come from small series and case reports.
Can anyone take rapamycin?
Rapamycin is a powerful drug with serious side effects, including reduced immune function and blood sugar disturbances, and is not suitable for independent use outside medical supervision.
Does rapamycin help people live longer in good health?
Rapamycin works in mice, but whether it also leads to a longer and healthier life in humans has not yet been demonstrated. Side effects are real, long-term data in healthy people are absent, and use outside a clinical context cannot currently be justified.
What do we know about rapamycin as an anti-ageing agent in humans?
Rapamycin shows early positive signals in humans for immune function and skin, but long-term safety is unknown and side effects such as infections and unfavourable blood lipids are a real risk. Use outside a clinical trial is premature.
Is rapamycin found in food, or can you get it naturally through your diet?
Rapamycin is not found in food and cannot be obtained through your diet. It is a medicine used only under medical supervision, due to the real risk of immune suppression.
Does rapamycin improve skin aging?
Topical rapamycin showed promising signs for skin ageing in a small study, but the evidence is still too thin to justify self-application.
Can rapamycin reverse or prevent grey hair?
Rapamycin shows interesting effects on pigmentation in the lab and in a rare hereditary disease, but there is no evidence whatsoever that it reverses or prevents grey hair in healthy people.