Understanding Brain Age in Multiple Sclerosis: What Affects Disability and Thinking Skills?

Researchers have found that people with multiple sclerosis (MS) often show a brain age that’s older than their actual years. This gap, called brain-predicted age difference (brain-PAD), is linked to worse physical disability and trouble with memory or focus. But here’s the big question: Could certain treatments or lifestyle factors actually slow down this aging effect in the brain?The study looked at people with MS who were the same age to rule out the natural aging process as a factor. It focused on disease-modifying factors (DMFs)—like medications or therapies—that might influence brain-PAD. The goal was to see if these factors not only improve MS symptoms but also protect the brain from aging too quickly. Surprisingly, the research didn’t find a strong link between DMFs and brain-PAD. That means even if treatments help with mobility or thinking, they might not directly slow the brain’s aging process in MS. This raises important questions. If DMFs don’t affect brain-PAD, what else could? Stress, diet, or even sleep habits might play a bigger role than we thought. The study also highlights a bigger issue: MS isn’t just about physical symptoms. Brain health is a major part of the disease, and we still don’t fully understand how to protect it.