Resources: 

https://www.diabetes.co.uk/diabetes-history.html

https://www.medicalnewstoday.com/articles/317484.php

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5959976/

https://www.diabetes.co.uk/diet/low-carb-high-fat-diet.html

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5426415/

https://www.newscientist.com/article/dn8577-three-week-diet-curbs-diabetes/

https://www.betternutrition.com/features-dept/better-nutrition-1930s