Vitamin D is often highlighted as a crucial nutrient, given its role in bone health, immune function, and more. However, understanding how to get the right amount can be a complex issue.

Dr. Eric Westman points out that vitamin D is widely considered the most common nutritional deficiency worldwide. It's not just about supplementing this deficiency; vitamin D is tied intricately to the prevention of several chronic health issues.

While it's easy to focus on potential deficiencies, it's equally important to highlight the risks of vitamin D toxicity. High levels can be just as detrimental as low levels, leading to serious health problems including an overload of calcium.

The decision to supplement with vitamin D should not be taken lightly. Here are important factors to consider:

• Understand your personal health status through regular blood tests for vitamin D levels.
• Beware both deficiency and toxicity: Stay within recommended limits to safeguard your health.
• Consider dietary and lifestyle changes as primary methods for maintaining healthy vitamin D levels, possibly reducing the need for supplements.
• Seek personalized medical advice, especially if considering higher doses of supplementation.

Dr. Westman emphasizes that high-quality, evidence-based medical guidelines, like those from the American College of Physicians, are essential for making informed decisions regarding vitamin D testing and supplementation.

Vitamin D occupies a unique position in both holistic and evidence-based medicine. While the nutrient is essential, Dr. Westman cautiously advises that supplementation should be guided by thorough research, lifestyle considerations, and professional medical advice to avoid potential dangers while optimizing health outcomes.

"Good food should be your medicine," suggests Dr. Westman, stressing the importance of real food diets such as keto, rather than relying solely on supplements.