Sexual health

Start with what matters: desire, function, and comfort. We explain libido, arousal, erectile function, orgasm, and sexual pain, and how medicines and hormones influence them. Clear language, evidence-based guidance, and practical steps to understand your body and improve sexual well-being.

8 signs of healthy sperm every man should know

8 signs of healthy sperm every man should know

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Nov 25, 2025 · 15 min read

Because sperm cells make up only about 5–10% of semen, the most reliable “signs” of healthy sperm are stable semen color and consistency, a decent ejaculate volume, no pain or blood, and semen-analysis results that meet reference ranges for count, motility, and morphology. Since sperm production takes about 74 days, tracking noticeable changes can help ...

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 · 11 min read

Kale isn’t a proven standalone treatment for erectile dysfunction, but its dietary nitrates and antioxidants can support endothelial nitric-oxide signaling—the pathway that relaxes penile blood vessels to allow engorgement. Because ED is often a vascular problem and affects up to 75% of men at some point, the bigger win is using a heart-healthy, Mediterranean-style eating ...

Getting kicked in the cb: What ball shots really do to your body and how to recover safely

Getting kicked in the cb: What ball shots really do to your body and how to recover safely

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Nov 20, 2025 · 11 min read

A direct blow to the scrotum can cause anything from a painful bruise to internal bleeding or testicular rupture, and the nausea/abdominal pain happens because the testes share nerve pathways with the kidneys from fetal development. Here’s how to tell a simple contusion from a true emergency and what to do right away to recover ...

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 · 9 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 ...

Top 3 erectile dysfunction causes

Top 3 erectile dysfunction causes

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Nov 01, 2025 · 14 min read

The three most common drivers of erectile dysfunction that persists for weeks to months are reduced penile blood flow from vascular disease, pelvic floor dysfunction that can’t “lock in” pressure by trapping blood, and a stress/anxiety loop that activates the sympathetic “fight-or-flight” response and shuts erections down. Because ED can be an early “check engine” ...

Special OfferLab panels included: $300/year free for all members