Relationships between circulating metabolites and facial skin aging: a Mendelian randomization study

Area of Science:

• Metabolomics
• Genetics
• Dermatology

Background:

• Blood metabolites play a crucial role in overall health.
• Limited evidence exists on the connection between circulating metabolites and skin aging.
• Understanding these links can provide insights into skin health and aging processes.

Purpose of the Study:

• To investigate the potential impact of circulating metabolites on facial skin aging.
• To identify specific metabolites associated with the risk of skin aging.

Main Methods:

• Utilized Mendelian randomization (MR) methods to analyze associations between metabolites and skin aging.
• Conducted primary analyses with 249 metabolites and secondary analyses with 123 metabolites.
• Employed MR Bayesian model averaging (MR-BMA) to identify predominant metabolites.

Main Results:

• The unsaturation degree of fatty acids was significantly associated with skin aging risk (OR=1.084).
• Multiple unsaturated fatty acid biomarkers showed significant causal effects on skin aging.
• MR-BMA confirmed the dominant role of fatty acid unsaturation in facial skin aging.

Conclusions:

• Systemic MR analyses provide a comprehensive overview of metabolite associations with facial skin aging.
• The unsaturation degree of fatty acids is a key factor genetically influencing skin aging risk.
• This research highlights a significant link between specific blood metabolites and skin aging.