Please select the eligibility criteria that correspond to the clinical trial below.
Title: N/A
Brief Summary: To address cardiovascular disease, cancer, and osteoporosis, the most common causes of death, disability, and impaired quality of life in postmenopausal women. The three major components of the WHI are: a randomized controlled clinical trial of hormone replacement therapy (HRT), dietary modification (DM), and calcium/vitamin D supplementation (CaD); an observational study (OS); and a community prevention study (CPS). On October 1, 1997, administration of the WHI was transferred to the NHLBI where it is conducted as a consortium effort led by the NHLBI in cooperation with the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), the National Cancer Institute (NCI), and the National Institute on Aging (NIA).


Options:
A: Inclusion Criteria:

* Body Mass Index \> 27 kg/m2
* No chronic medication (except oral contraceptives and L-Thyroxine) or possibility to stop medication for study duration
* Able to give written informed consent

Exclusion Criteria:

* Pregnancy and nursing
* Severe cardiovascular, liver, kidney, hepatic or orthopedic disease that need treatment
* Metabolic or endocrine disease that need treatment
* Hypertension blood pressure \> 160/95 mmHg or need of \> 2 drugs
* Previous stroke or cerebral ischemia
* Significant neurologic or psychiatric disease
* Any kind of eating disorder
* Bariatric surgery in the past
* Drug or alcohol abuse
* Any cancer in the past
* Acute and chronic infections
* Metallic implants (e.g. pace makers) or conditions that do not allow MRI scans
* Body weight \> 130 kg
B: Inclusion Criteria:

* 63 to 79 years old
* healthy men and women
* able to attend clinic at a study sites

Exclusion Criteria:

* illiteracy or inability to understand the protocol
* unable to undergo neurophysiological tests
* morbid obesity (BMI greater than or equal to ≥ 40 kg/m2)
* uncontrolled diabetes (HbA1c\>85)
* uncontrolled hypertension
* prior cerebrovascular accident
* any relevant psychiatric illness, including major depression
* advanced cognitive deterioration, dementia
* other neurodegenerative diseases (i.e. Parkinson's disease)
* any chronic illness expected to shorten survival (heart, liver, cancer, etc)
* bereavement in the first year of loss
* bad dentures unless fixable dental prostheses are used
* allergy to walnuts
* customary us of fish oil or flaxseed oil supplements
* eye related exclusion criteria
C: Inclusion Criteria:

* healthy men and women aged 30 to 65 years who has one or more self-assessed ischemic heart disease risk factors at screening: physical inactivity, overweight or obese (BMI ≥ 25/m2 ), waist circumference (≥ 80 cm for women, ≥ 94 cm for men). In addition, the participants should have the motivation and willingness to be randomized to any of the three groups, and to do their best to follow the given protocol .

Exclusion Criteria:

* no internet access or no access to a computer, smoking, pregnancy, or breast-feeding or planning to become pregnant within the next 12 months, a history of cardiovascular disease, type 2 diabetes, chronic disease / disorders that may affect the results of the study, substance abuse within the past 12 months, regular alcohol consumption \> 21 units / week for men or \> 14 units/ week for women, allergy or intolerance to food groups in the dietary guidelines, supplements with mega doses of nutrients that can have potential impact on ischemic heart disease risk markers (eg . fish oils).
D: Postmenopausal women ages 50 to 79.

Answer: D