Objectives: To examine the role of vaginal pH and basal body temperature (BBT) metrics in enhancing fertility and menstrual health across global and ethnic contexts.

Setting: Analysis of global and ethnic variations in fertility and menstrual health.

Intervention: A critical examination of non-invasive measures such as vaginal pH and BBT, along with factors like ethnicity, diet, lifestyle, and geographical location, in predicting ovulation and improving reproductive health outcomes.

Main Outcome Measure: The potential of vaginal pH and BBT monitoring, supported by technology, in offering personalized reproductive health insights.

Results & Conclusion: Variations in pH and BBT monitoring are observed across different ethnic groups, influenced by external factors. Findings suggest that integrating these metrics with educational and interventional programs can benefit women's psycho-social behaviors, quality of life, and emotional well-being. Further research is needed to validate these methods and explore their application in clinical settings, aiming to provide reliable, accessible tools for managing reproductive health with a personalized approach.