5. Conclusions
In summary, the HLCP-2 was mainly able to reduce total costs through a reduction in direct costs because of healthy lifestyle changes. Within the IG, total costs could be significantly reduced over the 2-year period (compared to baseline, as well as the CG, after 10 weeks and 6 months), with the greatest cost reduction noted after the 10-week intensive phase. Nevertheless, healthcare systems currently have not systematically incorporated lifestyle treatments into clinical practice and often do not cover the costs of nutrition services [