Why Men and Women Experience Differences in Immune Function
Dr. Joseph Mercola - Take Control of Your Health
Briana Mercola
4.6 • 1.6K Ratings
🗓️ 23 October 2025
⏱️ 8 minutes
🧾️ Download transcript
Summary
- Women face far higher rates of autoimmune conditions like lupus and multiple sclerosis because of their double set of X chromosome immune genes and the effects of hormones such as estrogen
- Men experience more severe viral infections, higher cancer risks, and age-related immune decline in part due to testosterone's suppressive effects and the gradual loss of Y chromosomes in immune cells
- Hormones shift immunity across life stages, meaning puberty, pregnancy, menopause, and andropause all create unique windows of higher or lower disease risk that you can plan around
- Environmental factors such as diet, toxin exposure, and gut health interact with your genetic and hormonal makeup, shaping how your immune system handles inflammation and infection
- Precision strategies based on sex-specific biology allow you to lower risks — women can focus on reducing autoimmune triggers, while men benefit from strengthening defenses against severe infections and cancer
Transcript
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| 0:00.0 | Are you overlooking how your sex changes your risk for autoimmunity, severe infections, or even cancer, and what that means for the choices you make today? |
| 0:09.7 | Welcome to Dr. Mercola's cellular wisdom. Stay informed with quick, easy-to-listen summaries of our latest articles, perfect for when you're on the go. |
| 0:17.7 | No reading required. Subscribe for free at Mercola.com for the latest health insights. |
| 0:22.6 | Hello and welcome to Dr. Mercola's cellular wisdom. I'm Ethan Foster. |
| 0:27.6 | Today we're unpacking why men and women experience different immune outcomes, how |
| 0:32.5 | hormones and chromosomes steer those differences, and how you can align daily decisions with your biology. |
| 0:39.6 | I'm Alara Sky. We'll keep this discussion direct and practical. You'll hear how X and Y |
| 0:45.7 | chromosomes, shifting hormones, and environmental exposures interact to shape inflammation, |
| 0:51.7 | infection severity, and long-term disease trends, and how to use that |
| 0:55.9 | knowledge to your advantage. |
| 0:57.9 | Women face far higher rates of autoimmune conditions such as lupus and multiple sclerosis. |
| 1:03.3 | You're 2.5 times more likely to develop multiple sclerosis and nine times more likely to develop |
| 1:09.2 | lupus if you're female. That pattern is tied to the |
| 1:12.2 | X chromosome, carrying many immune genes. With two X chromosomes, you hold a double set of |
| 1:17.9 | immune instructions, useful for fighting viruses, but it can tilt you toward autoimmune flare-ups |
| 1:23.4 | when responses run hot. Men, on the other hand, encounter more severe viral infections, |
| 1:29.4 | higher cancer risks, and age-related immune decline. |
| 1:33.8 | Testosterone generally dampens immune activity, |
| 1:36.8 | which lowers baseline inflammation, |
| 1:38.9 | but can leave you more vulnerable to tough infections. |
| 1:42.4 | Aging men also lose Y chromosomes in some immune cells, |
| 1:46.0 | a change linked to harsher outcomes and illnesses, |
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