Uploaded April 2025 | Updated September 2026, 2 weeks ago
Are our faces shaped by genetics or environment?
In this discussion, Dr. Mike Mew and Prof. John Mew analyze twin studies, craniofacial dystrophy, and the debate of nature vs. nurture in facial growth.
The conversation reviews scientific evidence from Horowitz (1960), Lobb (1987), Corrucini (1985, 1990), Carels (2001), and Khan (2020), along with broader research into craniofacial variation, orthodontics, and environmental influences such as breathing and diet.
📌 Support & Engagement
● Donate directly → preventcrookedteeth.com
● Engage with Prof. John Mew → /craniofacialactiongroup
(Please understand that he is 97 and all that this implies)
📝 Scientific Papers & References
● Craniofacial dystrophy. A possible syndrome? (Scientific Paper) → nature.com/articles/sj.bd
● Horowitz 1960 article → meridian.allenpress.com/angle-orthodontist/article/30/1/1/55291/A-Cephalometric-Study-Of-Craniofacial-Variation-In
[We are suspicious that John Mew may be incorrect that Horowitz was not a dentist; more work from him on twins is here → journals.sagepub.com/doi/abs/10.1177/00220345630420060901
]
● Lobb 1987 article → pubmed.ncbi.nlm.nih.gov/3477969
(link with download feature → https://epublications.marquette.edu/dentistry_fac/359/
)
● Corrucini 1990 → pubmed.ncbi.nlm.nih.gov/2373506
● Carels 2001 → pubmed.ncbi.nlm.nih.gov/11553097
● Corrucini (2) 1985 – Income groups in Punjab → link.springer.com/chapter/10.1007/978-1-4899-5001-7_9
● Khan 2020 “Jaws” → ncbi.nlm.nih.gov/pmc/articles/PMC7498344
(note “Genetic Causation” section)
● Problems comparing dizygotic and fraternal twins; June 2011 → researchgate.net/publication/233370244_Twin_relationships_A_comparison_across_monozygotic_twins_dizygotic_twins_and_nontwin_siblings_in_early_childhood
(Also see cohabitation effects by Waddington)
🎬 Related Resources
● Prof. Mew saying that faces can be damaged → youtu.be/BqV6JqHehoo?t=160
● Prof. Mew’s book “Let's Behave Like Animals” → amazon.co.uk/Lets-Behave-Like-Animals-Prof/dp/B0DLLGKYDB
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The Official App! Try these exercises, see if you can become a better version of you!
🌐 Website ➡ mewingapp.co
📲 Android ➡ tinyurl.com/3t5dete8
📲 Apple ➡ tinyurl.com/ewz6yrmk
Thousands are already transforming their health through mewing exercises. Download now and start your journey.
Connect with Prof. John Mew
If you’d like to engage directly with Prof. John Mew, you can join the community here: facebook.com/groups/craniofacialactiongroup
📚 Learn More About Orthotropics & Mewing:
🔹 Orthotropics Official ➡ orthotropics.com
🔹 Before & After Orthotropics Patients ➡ bit.ly/JohnMewBeforeAndAfter
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
🌍 Connect with us:
● Instagram ➡ instagram.com/orthodontichealth
● TikTok ➡ tiktok.com/@orthodontichealth
● Facebook ➡ facebook.com/orthotropics
● Twitter/X ➡ x.com/orthotropics
● Rumble ➡ rumble.com/user/Orthotropics
● Reddit ➡ reddit.com/r/orthotropics
● Patreon ➡ patreon.com/orthotropics
ℹ️ About Dr. Mike Mew & Orthotropics
Orthotropics, founded by Dr. John Mew, is a branch of orthodontics that focuses on guiding natural facial growth for better function, health, and aesthetics. “Mewing” — a tongue posture technique promoted by Dr. Mike Mew — is now a global movement changing lives.
This channel is part of the International Association of Facial Growth Guidance ➡ orthotropics.com
A non-profit raising awareness and funding research ➡ preventcrookedteeth.com
👉 If you found this helpful, don’t forget to like , comment , and subscribe 🔔 for more deep dives with Dr. Mike Mew.
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Are Faces Made or Born? Twin Studies with Dr. Mike Mew and Prof. John Mew
Are our faces shaped by genetics or environment?
In this discussion, Dr. Mike Mew and Prof. John Mew analyze twin studies, craniofacial dystrophy, and the debate of nature vs. nurture in facial growth.
The conversation reviews scientific evidence from Horowitz (1960), Lobb (1987), Corrucini (1985, 1990), Carels (2001), and Khan (2020), along with broader research into craniofacial variation, orthodontics, and environmental influences such as breathing and diet.
📌 Support & Engagement
● Donate directly → preventcrookedteeth.com
● Engage with Prof. John Mew → /craniofacialactiongroup
(Please understand that he is 97 and all that this implies)
📝 Scientific Papers & References
● Craniofacial dystrophy. A possible syndrome? (Scientific Paper) → nature.com/articles/sj.bd
● Horowitz 1960 article → meridian.allenpress.com/angle-orthodontist/article/30/1/1/55291/A-Cephalometric-Study-Of-Craniofacial-Variation-In
[We are suspicious that John Mew may be incorrect that Horowitz was not a dentist; more work from him on twins is here → journals.sagepub.com/doi/abs/10.1177/00220345630420060901
]
● Lobb 1987 article → pubmed.ncbi.nlm.nih.gov/3477969
(link with download feature → https://epublications.marquette.edu/dentistry_fac/359/
)
● Corrucini 1990 → pubmed.ncbi.nlm.nih.gov/2373506
● Carels 2001 → pubmed.ncbi.nlm.nih.gov/11553097
● Corrucini (2) 1985 – Income groups in Punjab → link.springer.com/chapter/10.1007/978-1-4899-5001-7_9
● Khan 2020 “Jaws” → ncbi.nlm.nih.gov/pmc/articles/PMC7498344
(note “Genetic Causation” section)
● Problems comparing dizygotic and fraternal twins; June 2011 → researchgate.net/publication/233370244_Twin_relationships_A_comparison_across_monozygotic_twins_dizygotic_twins_and_nontwin_siblings_in_early_childhood
(Also see cohabitation effects by Waddington)
🎬 Related Resources
● Prof. Mew saying that faces can be damaged → youtu.be/BqV6JqHehoo?t=160
● Prof. Mew’s book “Let's Behave Like Animals” → amazon.co.uk/Lets-Behave-Like-Animals-Prof/dp/B0DLLGKYDB
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
The Official App! Try these exercises, see if you can become a better version of you!
🌐 Website ➡ mewingapp.co
📲 Android ➡ tinyurl.com/3t5dete8
📲 Apple ➡ tinyurl.com/ewz6yrmk
Thousands are already transforming their health through mewing exercises. Download now and start your journey.
Connect with Prof. John Mew
If you’d like to engage directly with Prof. John Mew, you can join the community here: facebook.com/groups/craniofacialactiongroup
📚 Learn More About Orthotropics & Mewing:
🔹 Orthotropics Official ➡ orthotropics.com
🔹 Before & After Orthotropics Patients ➡ bit.ly/JohnMewBeforeAndAfter
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
🌍 Connect with us:
● Instagram ➡ instagram.com/orthodontichealth
● TikTok ➡ tiktok.com/@orthodontichealth
● Facebook ➡ facebook.com/orthotropics
● Twitter/X ➡ x.com/orthotropics
● Rumble ➡ rumble.com/user/Orthotropics
● Reddit ➡ reddit.com/r/orthotropics
● Patreon ➡ patreon.com/orthotropics
ℹ️ About Dr. Mike Mew & Orthotropics
Orthotropics, founded by Dr. John Mew, is a branch of orthodontics that focuses on guiding natural facial growth for better function, health, and aesthetics. “Mewing” — a tongue posture technique promoted by Dr. Mike Mew — is now a global movement changing lives.
This channel is part of the International Association of Facial Growth Guidance ➡ orthotropics.com
A non-profit raising awareness and funding research ➡ preventcrookedteeth.com
👉 If you found this helpful, don’t forget to like , comment , and subscribe 🔔 for more deep dives with Dr. Mike Mew.
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Are Faces Made or Born? Twin Studies with Dr. Mike Mew and Prof. John Mew
