Short answer: a large genetics study published in Nature Communications in November 2025 found that erectile dysfunction (ED) shares part of its genetic background with type 2 diabetes, heart failure, depression and substance-use disorders. The practical message is not new, but it is now better supported: ED is often a signal about overall health, not only a bedroom problem.
What the researchers did
The team used health records and DNA data from the US All of Us research programme, covering 88,722 men of European ancestry and 30,448 men of African ancestry, and combined them with earlier ED genetics datasets. They looked for DNA variants that appear more often in men with a recorded ED diagnosis, then compared those patterns with the genetics of other conditions.
What they found
| Finding | What it means |
|---|---|
| 51 lead genetic variants in the combined analysis | Many small genetic signals are involved, not one “ED gene”. |
| Inherited variation explained about 6% of ED risk | Genes play a modest part. Health and lifestyle matter much more. |
| Shared genetics with type 2 diabetes and heart failure | ED and cardiometabolic disease partly share the same biological pathways. |
| Shared genetics with depression, PTSD and ADHD | Mental health and erectile function are linked at a biological level too. |
| Links with opioid and cannabis use disorders | Substance use stood out as one of the strongest related factors. |
The analysis grouped these signals into two broad themes: one tied to heart and metabolic health, and one tied to substance use and risk-taking behaviour.
What this does not mean
- It is not a genetic test. The risk scores built from these variants predicted ED only modestly, and worked in men of European ancestry but not in men of African ancestry.
- It does not prove cause and effect in the clinic. The authors note their methods point to shared genetic liability, not proof that one condition causes another in an individual.
- The data has blind spots. ED was taken from medical records, so men with milder or unreported ED were missed, and men who seek care may differ from those who do not.
What men can take from it
- Treat new or worsening ED as a reason for a check-up. Blood pressure, blood sugar and cholesterol are worth testing, because ED can appear before other signs of heart or metabolic disease.
- Mention mood and sleep. Depression and its treatments both affect erections, and doctors can adjust for that.
- Be honest about alcohol, cannabis and other substances. They affect erectile function and the safety of ED medicines.
- Know that treatment works for most men. PDE5 inhibitors such as sildenafil and tadalafil are the most common ED treatment, with a reported success rate of 65% to 70%. They need a prescription and are not safe with nitrates.
If you and your doctor decide on medication, our guides compare the options: tadalafil vs sildenafil, generic Cialis and generic Viagra.
Frequently asked questions
Is erectile dysfunction genetic?
Partly, but only a little. In this study inherited variation explained about 6% of ED risk. Age, blood vessel health, diabetes, medicines, smoking and mental health have a much larger influence.
Is ED a warning sign of heart disease?
It can be. ED and heart disease share risk factors and, according to this study, some genetic pathways. New ED is a good reason to have your heart and metabolic health checked.
Can a DNA test predict ED?
No. The genetic risk scores in the study had modest accuracy and are research tools, not something to base decisions on.