Can we really «rejuvenate» erectile function with biotechnology?

Written by: SoldDolls editorial teamPublished on September 12,2026
Can we really «rejuvenate» erectile function with biotechnology?

With age, sexual function can evolve like the rest of the body. The erection may take longer to appear, be less firm or vary more depending on fatigue, cardiovascular health, medications and level of excitement.

American biohacker Bryan Johnson has been a great deal of media attention to measuring and optimizing different aspects of his body, including his erectile function. Some of his methods come from real medical treatments, but his personal results should not be presented as proof that a penis can literally «rejuvenate 15 years».

Low intensity shock waves, what is it?

One of the techniques used in this area is extracorporeal low-intensity shock wave therapy, often called Li-ESWT.

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It consists of applying acoustic impulses to the tissues of the penis. The objective studied is to promote certain mechanisms of tissue repair and to improve vascularization in men with certain types of erectile dysfunction, in particular of vascular origin.

This approach is not the same as the powerful shock waves used to fragment kidney stones.

Low intensity shock waves, what is it?

Studies have reported an improvement in some erectile function scores in some patients, but the results are not identical in everyone. Protocols, devices and number of sessions also vary.

We must therefore not present the shock waves as a guarantee of finding a «20-year» erection. In several countries, their exact place in the management of erectile dysfunction remains discussed and depends on local medical recommendations.

Why measure nocturnal erections?

Johnson also mentioned the use of devices for recording erections during sleep.

Nocturnal erections are a normal physiological phenomenon, often associated with the phases of REM sleep. Their presence can provide additional information when a doctor seeks to understand the origin of an erectile dysfunction.

Some tests use sensors placed around the penis to record variations in circumference and rigidity for several nights.

Why measure nocturnal erections?

These measures can help distinguish certain organic and psychological causes, but they do not replace the entire assessment: medical history, medications, clinical examinations, cardiovascular factors and psychological context remain important.

General health plays a major role

Beyond targeted technologies, erectile function strongly depends on cardiovascular and metabolic health. An erection requires in particular effective blood flow and good nervous functioning.

This is why long-term measures are often less spectacular:

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  • regular physical activity; ;
  • sufficient sleep; ;
  • balanced diet; ;
  • blood pressure control; ;
  • management of diabetes and cholesterol; ;
  • quitting smoking; ;
  • alcohol limitation; ;
  • Maintaining a weight that is appropriate for your health.
General health plays a major role

Johnson for his part follows an extremely structured program including measured diet, physical activity, biological monitoring and numerous interventions. Copying such an intensive protocol without medical indication is not necessary to improve your sexual health.

Beware of supplements in large quantities

Highly publicized «longevity» programs sometimes include dozens of food supplements per day.

More products do not automatically mean more profits. Some supplements may interact with medications, modify analyzes or cause adverse effects. Vitamins and minerals in high doses can also be useless when no deficiency is present.

A reasonable strategy therefore begins with known health factors and a medical check-up when an erection problem persists.

Beware of supplements in large quantities

Can we measure the «age» of a penis?

There is no standard penis biological age that could be reduced by a specific number of years with a device.

Some parameters can be measured: rigidity, duration of nocturnal erections, quality of blood circulation or response to treatment. But transforming these results into a formula of the «15-year-old penis younger» is mainly a media presentation.

An objective improvement in erectile function is nevertheless possible when acting on a treatable cause.

When should you consult for an erection drop?

A specific difficulty is common. Fatigue, stress, anxiety, alcohol or lack of sleep may be enough to modify an evening.

When should you consult for an erection drop?

On the other hand, when difficulty in obtaining or maintaining an erection becomes frequent for several weeks or months, medical advice is useful. Erectile dysfunction can sometimes be an early sign of a cardiovascular or metabolic problem.

A professional will also be able to check the drugs, the hormones when it is relevant and the psychological factors.

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to remember

Technologies like low-intensity shock waves are studied for certain erectile dysfunction and may be of interest to some patients. They do not prove that it is possible to universally «rejuvenate» the penis of a specific number of years.

The case of Bryan Johnson shows above all the interest of measuring his health and following certain parameters. For most men, the foundations remain simpler: physical activity, sleep, cardiovascular health, absence of tobacco and consultation when the disorders persist.