Thilsted began research in Bangladesh in the 1980s while working to improve the lives of malnourished people. After talking to local women who told her that eating a variety of local small fish species made them stronger, she began researching their diet. Returning to Copenhagen, she studied the nutritional value of small fish species in Bangladesh and later Cambodia.
“I was able to assess the nutritional composition of these small fish species and realized that they were extremely rich in multiple micronutrients, vitamins and minerals, and most importantly that the forms in which they were found were highly available and could be absorbed by the human body,” she told The Associated Press via video from Penang, Malaysia, ahead of the ceremony.