According to the Joing FAO/WHO Expert Consultation on Human Vitamin and Mineral Requirements, FAO, Bangkok, Thailand, 1998-09-21-30, Recommended nutritional intake is as follows (daily requirements). They seem very low in some cases. These are probably absolute minimum, not optimum requirements.
Adult males, 19-65 - Minerals
- Calcium, 1000mg
- Magnesium, 260mg
- Selenium, 34mcg
- Zinc
- High bioavailability, 4.2mg
- Medium bioavailability, 7.0mg
- Low bioavailability, 14.0
Iron
- 15% bioavailability, 9mg
- 12% bioavailability, 11mg
- 10% bioavailability, 14mg
- 05% bioavailability, 27mg
Iodine, 130mcg
Adult males, 19-65 - Water-soluble vitamins
- Biotin, 30mcg
- Folate, 400mcg DFE
- Niacin, 16mg
- Pantothenate, 5mg
- Riboflavin, 1.3mg
- Thiamin, 1.2mg
- Vitamin B6, 1.3mg (19-50yrs), 1.7mg (50+ years)
- Vitamin B12, 2.4mcg
- Vitamin C, 45mg
Adult males, 19-65 - Fat-soluble vitamins
- Vitamin A, 600mcg RD
- Vitamin D, 5mcg (19-50 yrs), 10mcg (50+yrs)
- Vitamamin E, 10mg
- Vitamin K, 65mcg