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Temporal trends in penile length

Pooled analyses report an apparent temporal trend in penile length, but this could reflect methodological shifts rather than biological changes.

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Jan 15, 2026
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What long-term experimental studies exist on masturbation 'training' and objective measures of penile sensitivity or ejaculation latency?

Experimental work testing whether “masturbation training” changes measurable ejaculatory latency or penile sensitivity exists but is limited: most trials are small, short (typically 8 weeks to 3 month...

Jan 6, 2026

How do measurement protocols (stretched vs. erect vs. pharmacologically induced erection) change reported penile length in clinical studies?

Different measurement protocols produce systematically different penile lengths: stretched penile length (SPL) is the most commonly used proxy and often yields values that correlate with erect length ...