Professor Mark Johnson on Instagram: "Vitamin D ☀️ plays a vital role in supporting a healthy pregnancy—yet in the UK, the majority of women are deficient due to limited sunlight exposure. In my own practice, I find that around 70% of women require supplementation. Vitamin D supports both mother 🤰 and baby 👶 by strengthening the immune system, improving calcium balance, and contributing to the development of a stronger skeleton in children, with benefits measurable years after birth. Because o