and active. Stay with us to uncover the four key symptoms doctors highlight, plus practical steps to protect your well-being.

What Is Vitamin D and Why Do So Many People Take It?
Vitamin D plays a key role in helping your body absorb calcium for strong bones and supporting immune function, which is why many adults over 40 turn to supplements, especially if they spend limited time outdoors. Taking vitamin D can feel like a simple way to maintain energy and vitality, but when levels climb too high, it may