The influence of asthma on face shape: a three-dimensional study

Area of Science:

• Craniofacial development
• Respiratory health
• Genetics and environment

Background:

• Respiratory activity may influence craniofacial development, interacting with genetic and environmental factors.
• Asthma has been suggested to impact facial shape.
• Investigating the link between asthma and craniofacial morphology is crucial for understanding developmental influences.

Purpose of the Study:

• To investigate differences in facial shape between individuals diagnosed with asthma and controls.
• To determine if asthma diagnosis correlates with specific craniofacial morphological variations.
• To explore potential sex-specific effects of asthma on facial development.

Main Methods:

• Observational longitudinal cohort study design.
• Asthma defined by diagnosed wheezing at 7.5 years; cohort followed to 15 years.
• Three-dimensional laser surface facial scans and landmark analysis used to compare asthmatic and non-asthmatic participants.

Main Results:

• Asthmatic females exhibited a statistically significant 0.4mm wider inter-ala distance and 0.4mm shorter mid-face height compared to non-asthmatic females.
• No statistically significant facial differences were detected between asthmatic and non-asthmatic male subjects.
• Observed differences in females were small but statistically significant, suggesting a potential link between asthma and craniofacial morphology.

Conclusions:

• Asthma is associated with subtle craniofacial differences in females, specifically in inter-ala width and mid-face height.
• No significant craniofacial differences were detected in males, possibly due to pubertal growth variations masking effects.
• Further research is warranted to understand the mechanisms and clinical significance of these sex-specific findings.