What is the commonly used dietary cutoff (in milligrams per day) to classify a mineral as a 'major' mineral rather than a 'trace' mineral?

Less than 1 mg/day, because the historical definition of trace nutrients often used microgram and submilligram thresholds for public health categorization.

10 mg/day, because some older nutritional schemes placed the dividing line an order of magnitude lower to reflect typical trace element needs across diverse diets and studies comparing micronutrient requirements internationally.

1,000 mg/day, since consuming mineral supplements in gram quantities is often required to achieve optimal blood levels for most minerals that influence bone and fluid balance.

100 mg/day.