#ImmuneSystem

Emerging scientific evidence is shedding new light—literally—on the fight against autoimmune diseases such as multiple sclerosis (MS), Crohn’s disease, and rheumatoid arthritis. Recent reports and peer-reviewed studies suggest that exposure to ultraviolet (UV) light may offer more than mood-boosting benefits or boosted vitamin D levels. Instead, UV light could play a direct therapeutic role in taming the overactive immune responses at the heart of these debilitating illnesses, a development with significant implications for Thai patients and healthcare providers alike.

Vitamin D, long considered a front-line defender for the immune system, may not be the magic shield against the common cold that many Thais and people worldwide have hoped for. Fresh findings published in The Lancet Diabetes & Endocrinology and widely reported by international health outlets reveal that vitamin D supplementation offers no statistically significant protection against acute respiratory infections—including everyday colds, bronchitis, and pneumonia—for the general population, overturning years of popular belief and previous modestly optimistic studies. As vitamin D remains one of the most commonly consumed dietary supplements in Thailand and globally, this comprehensive research holds special significance for millions of Thai families seeking ways to stay healthy, especially during the rainy season when respiratory illnesses tend to surge.