Usually not. Most ED has identifiable, addressable causes, physical, psychological, or a mix, and most men see meaningful improvement with the right treatment. Even where an underlying condition can't be fully cured, erectile function can very often still be significantly improved.

"Curable" depends on the cause. Lifestyle- and stress-driven ED often resolves close to fully. ED linked to a chronic condition (like long-standing diabetes) may not disappear entirely but can typically be meaningfully improved and managed.

Sometimes, if it's tied to a temporary cause, a stressful period, too much alcohol on the night, exhaustion. Persistent ED (weeks to months) rarely resolves on its own, and waiting often allows anxiety about the problem to make it worse.

No. It becomes more common with age, but plenty of men in their 20s and 30s experience it too, usually driven more by psychological or lifestyle factors than physical disease at that age.

Yes. Chronic stress triggers hormonal changes (raised cortisol and adrenaline) that directly work against the body's ability to achieve an erection.

Not necessarily. Low testosterone is one possible cause among several, circulation issues and psychological factors are actually more common culprits. A proper assessment can clarify which applies to you.

Sometimes, yes — persistent ED is linked with cardiovascular disease and diabetes, and can appear before other symptoms of either. This is a reason to get checked, not a reason to panic.