Why Do Autoimmune Diseases Affect Women More Than Men?
Autoimmune diseases are among the fastest-growing chronic health conditions worldwide. These diseases occur when the immune system mistakenly attacks the body's own tissues instead of protecting it from infections.
Examples of autoimmune diseases include:
• Hashimoto’s thyroiditis
• Systemic lupus erythematosus
• Rheumatoid arthritis
• Multiple sclerosis
• Celiac disease
• Psoriasis
One striking observation in medical research is that women are affected far more often than men.
In fact, approximately 75–80% of autoimmune disease patients are women.
Understanding why this gender difference exists has become an important area of scientific investigation. Researchers believe that a combination of hormonal, genetic, immune, and environmental factors may explain this pattern.
The Role of the Immune System
The immune system is designed to protect the body from infections and harmful microorganisms.
However, in autoimmune diseases the immune system loses its ability to distinguish between foreign threats and the body’s own tissues.
This leads to chronic inflammation and tissue damage.
Interestingly, studies suggest that women generally have stronger immune responses than men.
While this stronger immune response may help protect women from certain infections, it may also increase the risk of autoimmune reactions.
Hormones and Immune Function
Hormones play an important role in regulating immune activity.
Sex hormones such as estrogen, progesterone, and testosterone influence immune signaling pathways and inflammatory responses.
Estrogen
Estrogen is known to stimulate immune activity.
Research suggests that estrogen may enhance the activation of certain immune cells and increase antibody production.
While this immune activation can be beneficial for fighting infections, excessive activation may increase the likelihood of autoimmune responses.
Some autoimmune diseases, such as lupus, often flare during periods of hormonal change, including pregnancy or postpartum periods.
Progesterone
Progesterone generally has anti-inflammatory effects and may help regulate immune balance during pregnancy.
However, fluctuations in hormone levels throughout the menstrual cycle may influence immune responses.
Testosterone
Testosterone tends to have immunosuppressive effects, meaning it may reduce immune activation.
Because men typically have higher testosterone levels, this may partially explain their lower risk of autoimmune diseases.
Genetic Factors
Genetics also play a role in the gender differences seen in autoimmune diseases.
Women have two X chromosomes, while men have one X and one Y chromosome.
The X chromosome contains many genes involved in immune regulation.
Because women carry two copies of this chromosome, certain immune-related genes may be more active.
In some cases, incomplete inactivation of one X chromosome may lead to increased immune activity.
Pregnancy and Immune Adaptation
Pregnancy requires the immune system to adapt in order to tolerate the developing fetus.
These immune adaptations involve complex hormonal and immunological changes.
For some women, pregnancy may temporarily improve certain autoimmune conditions.
However, autoimmune diseases may flare after childbirth due to shifts in hormone levels and immune regulation.
The Role of the Gut Microbiome
Recent research suggests that the gut microbiome may influence autoimmune disease risk.
The gut microbiome plays a key role in regulating immune responses and maintaining immune tolerance.
An imbalance in gut bacteria, known as gut dysbiosis, may contribute to chronic inflammation and immune dysregulation.
Hormonal differences between men and women may influence the composition of gut bacteria, potentially affecting immune regulation.
Environmental Triggers
Genetics and hormones alone do not fully explain autoimmune disease development.
Environmental factors are believed to play an important role in triggering autoimmune conditions in genetically susceptible individuals.
Potential environmental triggers include:
• infections
• environmental toxins
• dietary patterns
• chronic stress
• gut microbiome imbalances
Exposure to these triggers may influence immune responses and contribute to autoimmune disease development.
Autoimmune Diseases in Saudi Arabia
Autoimmune diseases are increasingly recognized in Saudi Arabia and the Middle East.
Lifestyle changes, environmental exposures, and dietary patterns may influence the rising prevalence of chronic inflammatory diseases.
Greater awareness of autoimmune disease risk factors may help support early detection and preventive strategies.
Functional Medicine Perspective
Functional medicine focuses on identifying and addressing the root causes of chronic illness.
Rather than only managing symptoms, this approach evaluates underlying factors that may contribute to immune dysregulation.
These may include:
• gut microbiome health
• nutritional deficiencies
• environmental exposures
• stress levels
• metabolic health
Addressing these factors may help support immune balance and overall health.
Supporting Immune Balance
Several lifestyle strategies may help support healthy immune function.
Nutrition
A nutrient-dense diet rich in vegetables, healthy fats, and high-quality protein may help support immune regulation.
Reducing processed foods and excess sugar may also help reduce inflammation.
Gut Health
Maintaining a healthy gut microbiome is important for immune regulation.
Fiber-rich foods, fermented foods, and diverse plant foods may help support microbial diversity.
Stress Management
Chronic stress can influence immune function and inflammation.
Practices such as meditation, exercise, and adequate sleep may help support immune balance.
Environmental Awareness
Reducing exposure to environmental toxins may support overall immune health.
Maintaining good indoor air quality, choosing whole foods, and reducing exposure to pollutants may be beneficial.
Conclusion
Autoimmune diseases are significantly more common in women than in men due to a complex interaction between hormones, genetics, immune regulation, and environmental factors.
Understanding these mechanisms may help guide better prevention and personalized treatment strategies.
Supporting gut health, metabolic balance, and environmental health may play an important role in maintaining immune resilience.
As research continues to evolve, approaches that focus on the root causes of immune dysfunction may help improve outcomes for individuals living with autoimmune conditions.
If you are experiencing symptoms of autoimmune disease and would like a comprehensive evaluation using a functional medicine approach:
Dr. Samar Shadly, MD, IFMCP
د. سمر شاذلي، طبيبة معتمدة في الطب الوظيفي
Website
https://www.drsamarshadly.com
WhatsApp Consultation
https://wa.me/966558837786