doctor-patient discussion

There's nothing quite like the moment when your doctor says: "you have heart disease" (or diabetes). Sinners then repent with thoughts such as: "From this point on only healthy nutritious foods, daily exercise, and perhaps a bit of mindfulness." But do the sinners really repent or is that just something they tell themselves until the shock wears off, allowing their old ways to return?
Obesity not only decreases the likelihood that a woman can become pregnant, but obese women are also at increased risk of complications (such as gestational diabetes and elevated blood pressure with its more-worrisome pre-eclampsia)