Erectile problems after 40
After 40, more changes than you realise. Blood vessels lose their flexibility, testosterone gradually declines, and the effects of years of lifestyle choices accumulate. That is not failure, that is physiology.
Three changes after 40
1. Vascular decline
The endothelium, the inner lining of your blood vessels, gradually loses its ability to produce nitric oxide (NO). NO is the key molecule for vasodilation and therefore for an erection. This process begins subtly around age 35 and accelerates after 40. The result: reduced blood flow, slower response, less firmness.
2. Hormonal shifts
Testosterone declines by 1 to 2% per year from age 30. After 40, this can become clinically noticeable: less spontaneous libido, fewer morning erections, less energy. It is not just about the testosterone number; it is about the balance between testosterone, SHBG, and oestrogen.
3. Accumulation of lifestyle factors
Twenty years of poor sleep, limited exercise, chronic stress, and excess weight leave their mark. After 40, these effects can no longer be ignored: metabolism slows, visceral fat increases, and cardiovascular strain rises. Each risk factor amplifies the others.
Why medication alone often falls short after 40
PDE5 inhibitors such as sildenafil and tadalafil work by slowing the breakdown of cGMP, allowing nitric oxide to remain active longer. But that requires the body to still produce sufficient NO. After 40, men encounter three limitations:
- Reduced NO production: the endothelium produces less nitric oxide. The pill has less raw material to work with. It is like turning up the amplifier while the signal grows weaker.
- Narrowed vessels: atherosclerosis and endothelial dysfunction physically narrow the blood vessels. Medication can relax the vessel wall, but it cannot widen it.
- Drug interactions: men over 40 more frequently use blood pressure medications, statins, or antidepressants. Some of these drugs strengthen or weaken the effect of PDE5 inhibitors, or cause erectile problems as a side effect themselves.
This does not mean medication is useless. It means medication only treats the symptom, not the underlying vascular damage. And that its effectiveness diminishes for many men over the years.
How regenerative therapy works differently
Where medication addresses the symptom, shockwave therapy and PRP target the restoration of the underlying cause:
- Vascular repair: focused shockwave therapy stimulates neovascularisation, the formation of new small blood vessels in the erectile tissue. More vessels means more blood flow.
- Endothelial function: the treatment activates the eNOS enzyme, enabling the endothelium to produce more nitric oxide again. The signal becomes stronger, not just the amplifier.
- Tissue quality: growth factors from PRP support the repair of smooth muscle tissue and reduce fibrosis. The goal is tissue that functions better, not tissue that is better numbed.
This is not a miracle cure. The Cochrane review (2025) describes the evidence as "low" and the average improvement as "mild". But for the right patient, with vasculogenic ED, mild to moderate, it can make a meaningful difference.