The prevalence of metabolic syndrome (MetS) is increasing all over the world, which is largely related to the increasing obesity population and the current inactive lifestyle of human beings. It is a common problem facing public health and clinical practice.Metabolic syndrome is an accumulation of biologically metabolic risk factors related to cardiovascular disease and diabetes, including glucose metabolism disorders, hypertension, dyslipidemia, and obesity (especially central obesity).Researchers believe that the common pathological basis of these manifestations is insulin resistance, which is generally considered to be a reduction in the biological effects of insulin compared with the normal biological effects of expected biological phenomena.Nowadays, there are more and more studies on insulin resistance in the world. We have known that age, poor living and eating habits, high blood fat, high blood sugar and stress all lead to insulin resistance.

The researchers hope to reduce weight, reduce body fat rate, improve body fat distribution and insulin resistance, reverse abnormal metabolic indicators, and ultimately reduce the incidence of chronic diseases in patients with metabolic syndrome through the intervention of lifestyle and diet habits in the early stage of the disease.

Inclusion criteria

1. Diagnosed with metabolic syndrome (i.e., more than 3 abnormal findings out of 5):

   1. Waist circumference ≥ 90 cm (men) or ≥ 80 cm (women).
   2. Elevated TG (use of medications for elevated TG is an alternate indicator) ≥ 150 mg/dL (1.7 mmol/L).
   3. Reduced HDL-c (use of medications for reduced HDL-c is an alternate indicator) < 40 mg/dL (1.0 mmol/L) in males < 50 mg/dL (1.3 mmol/L) in females.
   4. Elevated blood pressure (use of hypoglycemic medications is an alternate indicator). SBP ≥ 130 and/or DBP ≥ 85 mmHg.
   5. Elevated FBG (used of hypoglycemic medications is an alternate indicator) ≥ 100 mg/dL (5.6 mmol/L).

2. Age from 18 to 65 years.

3. Stable weight (change ≤ 10% current body weight) for 3 months prior to the study.

4. If participates were on hypoglycemic medications, hypotensive medications, lipid-lowering medications and cardiovascular medications, dose adjustment was not permitted during the 3-month intervention.

Exclusion criteria

1. Pregnant or breast-feeding.
2. Night shift workers.
3. History of major diseases or related diseases, such as inflammatory disease, rheumatologic disease, adrenal disease, malignancy, type 1 diabetes, cirrhosis, chronic kidney disease, acquired immunodeficiency syndrome, eating disorder, uncontrolled psychiatric disorder and major adverse cardiovascular event.
4. Current participate in other weight-management program, current on a prescribed diet for special disease or current on any drugs that effect appetite.
5. History of weight-loss surgery.