Vitamin D is essential for strong bones, immunity, and healthy muscles—but too much can be dangerous. Because it’s fat-soluble, excess vitamin D can build up over time, leading to high calcium levels that may damage the kidneys and heart.
Early warning signs include excessive thirst, frequent urination, nausea, constipation, and fatigue. To stay safe, avoid unnecessary high-dose supplements, monitor your total intake, and consult a healthcare professional before increasing your dose.
