Please select the eligibility criteria that correspond to the clinical trial below.
Title: N/A
Brief Summary: The aim of the current study is to evaluate the effects of diets with three levels of dietary fat on weight change and related cardiometabolic risk factors in a 6-month randomized controlled-feeding trial.


Options:
A: Inclusion Criteria:

* Body mass index between 30 and 40
* Live and work within 1 hour of the study site
* Stable psychological status

Exclusion Criteria:

* History of heart disease, heart attack, or stroke
* Blood pressure \> 140/90 mmHG
* Abnormal cholesterol levels
* Significant psychiatric illness
* Any medication that affects weight or metabolic rate
* Presence or history of a chronic disease that is known to affect appettite, food intake, or metabolism (i.e. diabetes, thyroid disease or cancer).
* Currently using antidepressants, steroids, tobacco or illegal drugs
* Pregnant, breastfeeding, or planning pregnancy
* 10 lb change in weight within 6 months of study entry
* History of malignant arrhythmias or cerebrovascular, renal, or hepatic disease
* History of protein wasting diseases or gout
* Severe arthritis
* Osteoperosis
* Certain types of hormone replacement therapy
* Currently following a vegetarian diet
B: Inclusion Criteria:

* Only accepting participants in the Boston, Massachusetts or Baton Rouge, Louisiana area
* Between the ages of 30 - 70
* Willing to modify eating pattern according to instructions
* Overweight or obese and in good health with a BMI of 25-40
* Committed to a long-term weight loss and maintenance program
* Willing to attend multiple weight loss group sessions
* Willing to increase activity level

Exclusion Criteria:

* Pregnant, planning to become pregnant, or are breastfeeding
* Unwilling to participate in the schedule of group sessions and individual visits
* Unstable or recent onset of heart disease or any other serious illness
* Cannot change diet due to medical or other reasons
* Planning to leave the area prior to the anticipated end of participation
* Current participation in another clinical trial with an intervention that affects weight change
* Have diabetes that is treated with insulin or hypoglycemic oral medicines
* Diagnosis of psychiatric or emotional problems within 6 months of study
* Currently have an eating disorder
* Have hypothyroidism
* Have an unstable weight
C: Inclusion criteria:

* Students in Zhejiang University or working stuff in the Chinese PLA General Hospital
* 18 ≤ age ≤ 35
* Body Mass Index \< 28\*
* Are willing to eat all of the study foods even when full
* Are willing to eat only foods provided
* Are willing to avoid strenuous activity during the 6-mo intervention Exclusion criteria：
* Systolic blood pressure ≥ 140 mmHg or diastolic blood pressure ≥ 90 mmHg
* Total cholesterol ≥ 239 mg/dL
* Low-density lipoprotein cholesterol ≥ 159 mg/dL
* Triglycerides ≥ 199 mg/dL
* Blood glucose ≥ 110 mg/dL
* Change in body weight exceeding ± 10% during the prior year
* Energy intake is too low or too high
* Unwillingness or special requirement for diet that could not be modified
* Poor adherence during the recruiting meeting or unsatisfactory completion of keeping food diary or filling questionnaire at any time before randomization
* Eating disorder or any psychosocial or scheduling factors that could impede study outcomes
* Have a history of diagnosed CVD, diabetes, cancer or inflammatory diseases
* Have a history of a mental illness
* Have diagnosed endocrine, pulmonary or hematological disease
* Have diagnosed bowel disease or malabsorption that would prevent the participants from complying with the dietary restrictions of the feeding trial
* Renal or liver insufficiency
* Other chronic disease thought to interfere with the effect of the diet or with participation or adherence
* Current use of supplements or anti-inflammation medications or medications affecting glucose, lipid metabolism and blood pressure
* Smoking or alcoholic beverage intake \>1 times per week
* Current or planned pregnancy prior to end of study, or breast-feeding
* Irregular menstrual cycles
* Have birth control medication
D: Inclusion Criteria:

* Diagnosis of Type 2 Diabetes Mellitus

Exclusion Criteria:

* hemoglobin A1c values \<6.5% or \>10.5%
* use of insulin for \> 5 years
* tobacco use within the preceding 6 months
* consumption of more than 2 alcoholic beverages per day
* current drug abuse
* pregnancy
* unstable medical status
* current use of a low-fat, vegetarian diet.

Answer: C