Erectile dysfunction

Understanding the causes, prevention, and treatment of erectile dysfunction. Learn how hormonal health, cardiovascular fitness, and lifestyle factors influence sexual performance and what options are available to restore function.

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The essentials for erectile dysfunction — then explore the latest posts below.

Worst foods for erectile dysfunction: The eating habits that quietly wreck erections

Worst foods for erectile dysfunction: The eating habits that quietly wreck erections

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Jan 15, 2026 · 11 min read

The worst foods for erectile dysfunction are the ones that raise blood pressure, damage blood vessels, spike cholesterol, destabilize blood sugar, or impair nerve signals, especially high sodium processed foods, trans and saturated fat heavy meals, added sugar, and alcohol. If you keep running into “can’t get hard” nights, your plate may be a bigger ...

Does creatine cause erectile dysfunction? What the evidence says for men

Does creatine cause erectile dysfunction? What the evidence says for men

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Jan 01, 2026 · 10 min read

No, creatine does not cause erectile dysfunction in men based on the current clinical evidence. The more important story is why the rumor started, what actually drives ED, and how to use creatine safely while protecting sexual performance. “When men ask me, ‘does creatine cause erectile dysfunction,’ my answer is no. In the medical literature ...

Does testosterone make your dick bigger? What the science says about size, erections, and TRT

Does testosterone make your dick bigger? What the science says about size, erections, and TRT

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 21, 2025 · 11 min read

Testosterone does not make your penis bigger after puberty. But if low testosterone is weakening your erections, restoring healthy levels can make your penis look and function bigger in the moment because erection quality improves. “If you are asking ‘does testosterone make your penis bigger,’ the honest medical answer is no for adult men. Testosterone ...

Can kale really help erections? What the science actually says

Can kale really help erections? What the science actually says

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Nov 24, 2025 · 12 min read

Kale isn’t a proven standalone treatment for erectile dysfunction, but its dietary nitrates and antioxidants can support endothelial nitric oxide signaling. This is the pathway that relaxes penile blood vessels to allow engorgement. Because ED is often related to vascular and metabolic health and becomes more common with age, the bigger win is using a ...

Does nicotine increase testosterone or quietly wreck it?

Does nicotine increase testosterone or quietly wreck it?

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Nov 20, 2025 · 10 min read

In observational studies, male cigarette smokers average about 15% higher total testosterone and 13% higher free testosterone than non-smokers, likely because nicotine alters liver hormone metabolism and slows testosterone breakdown. That “smoker’s paradox” can still coincide with erectile dysfunction and infertility as smoking damages blood vessels and testosterone-producing Leydig cells, so higher lab numbers don’t ...

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