Nov 1, 2024 · We don't know what causes MS, but there are certain factors that may increase the risk or trigger its onset. So while MS can occur at any age, it mostly makes its first appearance in people …

Scientists do not know for certain what causes multiple sclerosis. They believe that a mix of factors trigger it. Studies support the idea that a trigger in the environment may cause MS in certain people …

Jul 3, 2025 · Multiple sclerosis affects everyone differently. Learn what experts currently know about possible multiple sclerosis causes and risk factors, such as the immune system.

MS is an autoimmune disease with a combination of genetic and environmental causes underlying it. Both T-cells and B-cells are involved, although T-cells are often considered to be the driving force of …

Dec 17, 2025 · Multiple sclerosis (MS) is a chronic neurological disorder. It’s an autoimmune disorder, meaning that in MS, the immune system—which normally protects us from viruses, bacteria, and …

Mar 23, 2026 · Multiple sclerosis (MS) happens when your immune system attacks myelin, the sheath around your nerve cells. Without this outer shell, your nerves become damaged and cause …

Jan 25, 2024 · Demyelination, or the destruction of myelin, causes multiple sclerosis. Myelin is a protective cover (sheath) around nerve cells (neurons) in your brain and spinal cord.

Oct 22, 2025 · Doctors still don't understand exactly what causes multiple sclerosis. But ongoing research shows many reasons could be at play, including your genes, where you live, and even the …

Jun 16, 2025 · Many possible causes for MS have been studied and a combination of factors may be involved, such as slow-acting viruses, genetic-susceptibility, insufficient vitamin D, and more.

Sep 10, 2025 · Unlike some conditions with a single clear cause, MS seems to arise from a complex interplay of genetic, environmental, and lifestyle factors. Genetics plays a role in predisposing …