The case is a 51-year-old male with obesity, type 2 diabetes (T2D), dyslipidemia, and hypertension. His HbA1c value increased to 8.0%, accompanied by oral semaglutide administration. Glucose variability was exacerbated after that, and then novel imeglimin (Twymeeg) was initiated. HbA1c decreased from 7.4% to 6.7% over 4 months with a 3 kg weight reduction. The case also had low back pain (LBP) and lumbar spinal stenosis (LSS), probably resulting from Metabolic syndrome (Met-S), and had actual experience with a low carbohydrate diet (LCD) in the hospital meals. Four patterns of LCD meals had carbohydrates ranging from 17.8g to 28.0g, with 501-690kcal.