A July 2019 study by Duke Health and the National Institutes of Health suggests that cutting down daily food intake by just 300 calories can cut the risk of diabetes and heart disease.   

For context, two scrambled eggs is equivalent to 360 calories.

Lead author Dr William Kraus said the study showed that, "… even a modification that is not as severe … could reduce the burden of diabetes and cardiovascular disease …"  and, "People can do this fairly easily by simply watching their little indiscretions here and there, or maybe reducing the amount of them, like not snacking after dinner."