The disparity in life expectancy between men and women is a well-documented phenomenon, with men generally dying earlier than women across the globe. According to the World Health Organization (WHO), the global average life expectancy is 73.8 years for women and 68.4 years for men, resulting in a 5-year gap. This article aims to provide a comprehensive overview of the biological, behavioural, and societal factors contributing to this disparity.
Biological Factors
Hormonal Influences: Estrogen, the primary female sex hormone, has been shown to have protective effects on cardiovascular health, whereas testosterone, the primary male sex hormone, is associated with increased cardiovascular risks. Estrogen’s antioxidant properties help maintain healthy blood vessels, reducing the risk of atherosclerosis and cardiovascular disease.
Genetic Differences: Women have two X chromosomes, providing a backup copy of genes, whereas men have one X and one Y chromosome, making them more susceptible to genetic mutations. This genetic disparity may contribute to the increased risk of certain diseases, such as hemophilia and colour blindness, in men.
Immune System: Women tend to have stronger immune systems, which helps them fight off diseases more effectively. This is partly due to the presence of estrogen, which enhances immune function, and the absence of testosterone, which can suppress immune responses.
Behavioural Factors
Risk-Taking Behavior: Men are more likely to engage in risk-taking activities, such as smoking, excessive drinking, and reckless driving, which increase their mortality risk. According to the WHO, men are three times more likely to die from unintentional injuries than women.
Poor Health Habits: Men tend to have poorer diets, exercise less, and are less likely to seek medical help when needed. A study published in the Journal of General Internal Medicine found that men are less likely to visit doctors and adhere to medical treatment plans.
Occupational Hazards: Men dominate high-risk occupations, such as construction, fire fighting, and military combat, which contribute to higher mortality rates. The Bureau of Labour Statistics reported that men accounted for 92% of workplace fatalities in the United States in 2020.
Societal Factors
Mental Health Stigma: Men are less likely to seek help for mental health issues, leading to higher suicide rates. The American Psychological Association reports that men are four times more likely to die by suicide than women.
Social Connections: Men often have weaker social connections, which are essential for overall health and well-being. A study published in the Journal of Social and Clinical Psychology found that social isolation increases mortality risk in men.
Healthcare Access: Men are less likely to have regular health check-ups and screenings, leading to delayed diagnoses and treatment.
Conclusion
The gender gap in mortality is a complex issue, influenced by a combination of biological, behavioural, and societal factors. Understanding these factors is crucial for developing effective strategies to reduce the disparity and promote healthier lifestyles for men. Encouraging men to seek medical help, reducing stigma around mental health, and promoting healthy behaviours can help bridge the gap.
By Dr Robert Grimmond-Thompson
