SizeGenetics — Science-first education about FDA-registered traction therapy from the inventors of the category (1994). Clinically proven. Over 1,000,000 devices sold worldwide.

We're the official YouTube channel for SizeGenetics, an FDA-registered Class II medical device developed by Danamedic ApS in Denmark. Danamedic didn't just make a penile traction device — they invented penile traction therapy itself in 1994. That's 32 years of clinical engineering, over 1,000,000 devices sold, and a body of evidence spanning 15+ peer-reviewed studies.

SizeGenetics was co-invented by Dr. Jorn Ege Siana, a plastic surgeon, alongside medical advisors Dr. Finn Worm Knudsen and Dr. Michael Carter. The device delivers calibrated traction of up to 3,200 grams using the same tissue expansion science that surgeons have relied on for decades in reconstructive medicine.