I just thought of another example .a famous person who was into competitive sport so was eating very healthy all her life and exercising a lot. After this she became a top model and so again she ate healthy and exercised. Then suddenly she started putting on weight for no reason.
Long story short she finally found out why and was diagnosed with diabetes 2
This diagnosis despite heathy eating and exercising all her life
So stop thinking that healthy eating and exercising is a guarantee of good health because it obviously is not