Micronutrient Estimator

Micronutrients — vitamins and minerals — are required in small amounts but are essential for virtually every biological process. Unlike macronutrients, deficiencies in vitamins and minerals don't always produce obvious immediate symptoms. Instead, they manifest as subtle declines in energy, immune function, cognitive performance, bone density, and metabolic health over months to years.

The most universally under-consumed micronutrient in modern diets is vitamin D. Because it's produced primarily through UV-B sun exposure and present in very few foods, desk-working, indoor-living populations are almost universally deficient. Low vitamin D is associated with depression, immune dysfunction, bone loss, and increased cancer risk. Supplementing 2,000–4,000 IU vitamin D3 daily (with K2 for optimal bone benefit) is one of the highest-value, lowest-risk interventions for most people.

Magnesium is another broadly under-consumed mineral, involved in over 300 enzymatic reactions including ATP production (cellular energy), protein synthesis, muscle function, and sleep quality. Low magnesium contributes to muscle cramps, poor sleep, anxiety, elevated blood pressure, and constipation. Leafy greens, legumes, nuts, seeds, and dark chocolate are the best food sources; magnesium glycinate or malate are well-absorbed supplement forms.