Take a look at this exciting video made by John Ott, one of the founders of the science of photobiology.
| Vitamin D Dose Recommendations |
| Below 5 | 35 units per pound per day |
| Age 5 - 10 | 2500 units |
| Age 18 - 30 | 5000 units |
| Pregnant Women | 5000 units |
WARNING: There is no way to know if the above recommendations are correct. The ONLY way to know is to test your blood. You might need 4-5 times the amount recommended above. Ideally your blood level of 25 OH D should be 60ng/ml. |