why does your penis stop growing even though you produce testosterone your entire life?

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why does your penis stop growing even though you produce testosterone your entire life?

In: Biology
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Same reason your limbs stop growing; it’s programmed to grow to a certain size. Your body doesn’t grow endlessly depending on growth factors alone; there is a genetic limit to growth and growth factors (hormones, nutrition, environment etc) help or hinder the growth to that limit…

What about the fact that our ears and noses continue to grow through out our lives?