How does that account for a population who..
..74% are overweight or obese
..less than 10% meet the fruit and vegetable recommendations
..25% get the recommended amount of exercise
..eat more than 70g added sugar a day
Healthcare really has the deck stacked against it however you look at it
Your mistake is separating those items from healthcare, when it's part of it.
Even in the US, many (most?) insurances and healthcare systems have programs to address all those. My HMO certainly does - I can engage with them and craft a healthy nutrition plan, and my doctor can be involved in that as well. Ditto for exercise.