He dabbled with a higher concentration of vitamins, but they hurt the flavor of the beer, says Schwartz, who aims to cash in on the craze for fortified food and beverages of all kinds.

FORBES: To Your Health?

Most notably she is co-director of the non-profit Biology Fortified a site popular among young sustainability focused scientists, geneticists and food experts.

FORBES: Connect

Small amounts of vitamin D can be consumed through food, such as fish, cod liver oil, and fortified milk and juice.

CNN: Vitamin D may be essential for heart health

Across the heavily fortified American bases in Iraq, men and women like Salim Khan cook the food, clean the dishes, chop the vegetables, take out the garbage and clean the latrines.

NPR: U.S. Contractors in Iraq Rely on Third-World Labor