Autoimmune Disease Prevalence in the U.S.: 23.5 Million Affected

Scope of the Problem

Approximately 23.5 million Americans (about 7% of the population) live with an autoimmune disease, according to NIH estimates. These conditions disproportionately affect women (≈78% of cases).

What Are Autoimmune Diseases?

The immune system loses self-tolerance and attacks the body's own tissues, causing chronic inflammation and organ damage. Over 80 distinct diseases are recognized.

Common Examples

• Rheumatoid arthritis – Joint synovium
• Systemic lupus erythematosus (SLE) – Multi-system
• Multiple sclerosis – Central nervous system myelin
• Type 1 diabetes – Pancreatic beta cells
• Hashimoto's thyroiditis – Thyroid gland
• Psoriasis/Psoriatic arthritis – Skin, joints
• Inflammatory bowel disease (Crohn's, ulcerative colitis) – GI tract

Impact

• Leading cause of death/disability in young/middle-aged women.
• High healthcare costs, lost productivity, reduced quality of life.
• Increased risk of cardiovascular disease, infections, malignancy.

Research Priorities

Earlier diagnosis, biomarkers, targeted immunomodulation, and understanding environmental triggers (microbiome, viruses, toxins).