The limiting factor of penis size girth

[User28823]

The tunica albuginea is the primary limiting anatomical factors in determining erect penis size, especially girth.

Here's why:​

• What is the tunica albuginea?
  It's a tough, fibrous sheath that surrounds the corpora cavernosa, the two sponge-like regions that fill with blood during an erection.
• Its role in erections:
  During arousal, blood flows into the corpora cavernosa and causes expansion. The tunica albuginea limits how much they can expand—like a balloon with a tough outer wall—which directly affects both the length and girth of the erect penis.
• Thickness and elasticity vary:
  Some men have a thicker or less elastic tunica, which may limit expansion more than in others. This variation contributes to natural differences in penis size.

Why it's a "limiting" factor:​

• It determines the maximum pressure the penis can handle during erection.
• Surgical or trauma-induced modifications (e.g., in Peyronie’s disease treatments) that affect the tunica can result in changes to size—sometimes increasing, but often decreasing it.
• Stretching devices or techniques aim to induce plastic changes in the tunica over time, but clinical evidence for size increase is mixed and slow.

In short:
Yes, the tunica albuginea is a key structural limiter of penis size—especially during erection.
But it's not the only factor—genetics, hormone levels during puberty, and vascular health also play significant roles.

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[Gengar]

I thought this was gonna be a "too much girth is a bad thing" type of thread.