16. Elsie Widdowson
Elsie Widdowson is known for her research that she conducted during World War II on sustainable healthy diets in a time where food was scarce and what was available was rationed heavily. This led to Elsie beginning her journey into self-experimentation, by reviewing the types of foods that were available in Britain to the public and determining how one could stay healthy and satisfied at the same time.
Elsie discovered a diet consisting of cabbage, potatoes, and bread could keep a person in good health, even when under extreme starvation and calorie expulsion. To test her theory, she hiked over 36 miles in one day on her diet and still felt fine the next day. She eventually submitted her diet plan to the British government who approved it quickly. Her research would go on to help Holocaust survivors recover from their times in the camps.