Can ED really show up before diabetes is diagnosed?
Yes, and guidelines say so directly. The AUA erectile dysfunction guideline calls ED a risk marker for treatable conditions such as undiagnosed diabetes and cardiovascular disease, and notes that in some cases ED may be how previously undiagnosed diabetes first shows itself. It also says ED tends to appear at an earlier age in men with diabetes.
Undiagnosed diabetes is not rare. The CDC estimates that 27.6% of U.S. adults with diabetes, about 11.0 million people, do not know they have it. For some of those men, trouble with erections is the first thing they notice.
How strong is the link between ED and diabetes?
Strong enough that ED works as an early clue, especially in younger men. A national study of insurance claims compared 285,436 men with ED to 1,584,230 men without it. Diabetes was present in 20.0% of the men with ED and 7.5% of those without, and after adjusting for age and other diseases, men with ED had 1.60 times the odds of having diabetes.
| Age group in the study | Odds of diabetes with ED versus without |
|---|---|
| 26 to 35 | 2.94 times |
| 76 to 85 | 1.05 times, not significant |
The authors concluded ED is a strong marker of diabetes in men 45 or younger, a likely marker from 46 to 65, and not a marker after 66. The NIDDK adds that men with diabetes are more than three times as likely to develop ED as men without it, and that more than half of men with diabetes will develop ED.
Why do A1c and fasting glucose belong in every ED workup?
Because the result can change both the ED treatment and your health far beyond the bedroom. The AUA lists fasting glucose or A1c, fasting lipids, kidney function and a morning testosterone among the basic tests that may be ordered when recent results are not available. The NIDDK’s diagnostic cutoffs make the results easy to read:
| Test | Normal | Prediabetes | Diabetes |
|---|---|---|---|
| A1c | Below 5.7% | 5.7% to 6.4% | 6.5% or above |
| Fasting glucose | 99 mg/dL or below | 100 to 125 mg/dL | 126 mg/dL or above |
A diabetes-range result usually needs confirming with a second test. If it is confirmed, blood sugar care joins the ED plan, and the clinician managing your diabetes should know. Our pages on the HbA1c test and the fasting glucose test explain each number, and our list of blood tests for erectile dysfunction covers the rest of the workup.
What if my blood sugar comes back normal?
Then the search moves to the other common causes. The AUA guideline describes ED as a possible early sign of hidden heart disease, so blood pressure, cholesterol and smoking history matter too, as our page on ED as an early sign of heart disease explains. Testosterone, medicines, sleep and stress round out the list.
If erection problems come with chest pain, shortness of breath or pressure in the chest, especially on exertion, call 911 or go to the emergency room rather than booking a routine visit.
Related question: can ED from diabetes be reversed?
Sometimes partly, especially when blood sugar improves early. Our answer on whether diabetic ED can be reversed covers what tends to help, and our page on erectile dysfunction with diabetes explains the treatment options.
Getting checked at Ultimate Male
An ED visit at our San Gabriel or Downey clinic includes labs drawn on site, with results usually in 24 to 48 hours, and a confidential one-on-one review with a PA-C or MD. If your A1c or glucose is high, you find out alongside the plan for your erections, and the options on our erectile dysfunction treatment page are matched to your results. The panels themselves are listed on our preventative blood testing page. Start with the free 10-minute call.
