Based on previous literature, we hypothesize that lifestyle interventions, particularly strict low-carbohydrate diets combined with lifestyle guidance, may offer greater health benefits for obese men. These benefits include effective weight loss, improvement in semen parameters, reproductive metabolic health, quality of life related to reproductive health, and the impact on reproductive treatment outcomes. This provides a basis for non-pharmacological intervention strategies and methods for the health of obese men. conditions: Obesity conditions: Weight Loss conditions: Male Fertility conditions: Artificial Insemination conditions: IVF-ET studyType: INTERVENTIONAL phases: NA allocation: RANDOMIZED interventionModel: PARALLEL primaryPurpose: SUPPORTIVE_CARE masking: DOUBLE maskingDescription: Based on the design of this clinical trial, blinding is not implement ed for participants and care providers. Blinding is only applied to outcome assessors and investigators. Outcome assessors are clinical staff members who are unaware of the group assignments, and data is collected directly from the medical records system by EDC data entry personnel for management (double-checking). Data analysts will directly extract information and data from the EDC database for statistical analysis. Blinding will be revealed upon completion of result analysis. whoMasked: INVESTIGATOR whoMasked: OUTCOMES_ASSESSOR count: 38 type: ESTIMATED name: Low-carbohydrate diet group name: Health Education Group measure: Weight measure: Semen parameter- Sperm concentration measure: Semen parameter- Sperm motility measure: Semen parameter- Sperm morphology measure: Semen parameter- Sperm DNA fragmentation index (DFI) measure: Semen parameter- Sperm progressive motility (PR) measure: Semen parameter- Non-progressive motility (NP) measure: Semen parameter- Immotility (IM) measure: body mass index (BMI) measure: Waist circumference measure: Hip circumference measure: Lean mass measure: Fat mass measure: Abdominal fat measure: Visceral fat measure: Blood pressure measure: Heart rate measure: Lipid profile-triglycerides measure: Lipid profile-LDL measure: Lipid profile-HDL measure: Lipid profile-VLDL measure: Lipid profile-total cholesterol measure: Glucose metabolism-fasting glucose measure: Glucose metabolism-OGTT measure: Glucose metabolism-insulin measure: Glucose metabolism-C-peptide measure: Glucose metabolism-HbA1c measure: Sex hormones measure: Adult background measure: Questionnaire - Adult physical activity measure: Questionnaire - Quality of life measure: Questionnaire - Psychological condition measure: Questionnaire - Sleep measure: Spouse's reproductive outcome - Methods of Fertilization measure: Spouse's reproductive outcome - Time to pregnancy measure: Spouse's reproductive outcome - Length of gestational age measure: Spouse's reproductive outcome - Medication use measure: Spouse's reproductive outcome - Delivery mode measure: Spouse's reproductive outcome - Pregnancy complications measure: Spouse's reproductive outcome - Obstetrics complications measure: Fetal and offspring - Apgar score measure: Fetal and offspring - body weight measure: Fetal and offspring - Neonatal fat mass measure: Fetal and offspring - Birth defects/abnormalities measure: Fetal and offspring - length measure: Fetal and offspring - abdominal circumference measure: Fetal and offspring - crown circumference measure: Fetal and offspring - Glucose metabolism measure: Fetal and offspring - Lipid profile measure: Fetal and offspring - Offspring growth factors and hormones measure: Fetal and offspring - Cognitive development of offspring measure: Labs - Semen epigenetics marks measure: Labs - Adult Epigenetics measure: Labs - Cord blood - epigenetics measure: Labs - Cord tissue measure: Labs - Placenta measure: Labs - Placenta - biopsies measure: Labs - Offspring urine measure: Labs - Offspring feces sex: MALE minimumAge: 22 Years maximumAge: 40 Years stdAges: ADULT hasResults: False