Feeling tired, achy, or weak? Expert says low vitamin D could be the cause, here’s how sunlight, nutrition, and doctor-guided supplements can help

It sounds almost ironic. People live in bright, sun-filled regions, yet millions struggle with low vitamin D levels.Doctors say this quiet deficiency has become one of the most widespread nutritional problems today. Urban lifestyles, indoor work culture, rising pollution, and changing diets have all played a role. Many people move between home, office, and car without spending meaningful time under the sun.