Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized Double-Blind Placebo-Controlled Trial Of The Effects Of Docosahexaenoic Acid (DHA) In Slowing The Progression Of Alzheimer's Disease
Brief Summary: The purpose of this study is to determine whether chronic DHA (Docosahexaenoic Acid) supplementation slows the progression of cognitive and functional decline in mild to moderate Alzheimer's disease (AD).


Options:
A: Inclusion Criteria:

* Aged 21 years and older
* Have BMI \>30.0 kg/m2 and \<40 kg/m2
* Willing and able to participate in clinic visits, group sessions, and telephone and Internet communications at specified intervals
* Able to provide data through questionnaires and by telephone
* Willing to maintain contact with the investigators for 12 months
* Willing to allow blood collections
* No known allergy to tree nuts
* Able to be physically active

Exclusion Criteria:

* Diabetic
* Inability to be moderately physically active
* A history or presence of a comorbid diseases for which diet modification and increased physical activity may be contraindicated
* Currently pregnant/breastfeeding
* Planning to become pregnant within the next year
* Currently enrolled in a weight loss program or diet intervention study
* Current use of weight loss medication or supplements
* Planned surgical procedure that can impact the conduct of the study
* Have plans to relocate from area within the next year
* 6+ months use of meds likely to cause weight gain or prevent weight loss
* Any condition which in the opinion of the investigator makes the subject unsuitable for inclusion in this study
B: Inclusion Criteria:

* Male or female
* 50 years of age or older
* Residing in the community at baseline (includes assisted living facilities, but excludes long-term care nursing facilities)
* MMSE (Mini-Mental State Examination) at screen of 14-26 (inclusive)
* No medical contraindications to study participation
* Fluent in English or Spanish
* Corrected vision and hearing sufficient for compliance with testing procedures
* Supervision available for study medication
* Caregiver/study partner to accompany participant to all visits
* Study partner must have direct contact with the participant more than 2 days/week
* Able to ingest oral medication
* Daily DHA consumption less than or equal to 200 mg/day in prior two months estimated by an abbreviated DHA food frequency questionnaire
* Neuroimaging consistent with the diagnosis of AD at some time after the onset of the memory decline
* Clinical laboratory values must be within normal limits or, if abnormal, must be judged to be clinically insignificant by the investigator
* Stable use of cholinesterase inhibitors and memantine is permitted if doses are stable for 4 months prior to enrollment

Exclusion Criteria:

* Non-AD dementia
* Residence in a long-term care facility at baseline
* History of clinically significant stroke
* Modified Hachinski Ischemia score ≥ 4
* Current evidence or history in past two years of epilepsy, seizure, focal brain lesion, head injury with loss of consciousness or DSM-IV (Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition) criteria for any major psychiatric disorder including psychosis, major depression, bipolar disorder, alcohol or substance abuse
* Sensory impairment which would prevent subject from participating in or cooperating with the protocol
* Use of another investigational agent within two months
* Evidence of any significant clinical disorder or laboratory finding that renders the participant unsuitable for receiving an investigational new drug including clinically significant or unstable hematologic, hepatic, cardiovascular (including history of ventricular fibrillation or ventricular tachycardia), pulmonary, gastrointestinal, endocrine, metabolic, renal, or other systemic disease or laboratory abnormality
* Active neoplastic disease (skin tumors other than melanoma may be included; participants with stable prostate cancer may be included at the discretion of the Project Director)
C: Inclusion criteria:

* Men and women
* Aged 60 through 80 y
* Verified clinically diagnosed myocardial infarction up to 10 y before randomization
* Written informed consent

Exclusion criteria:

* Living in a nursing home or other institution
* Participation in another scientific study
* Habitual margarine intake \< 10 g per day
* Habitual fish intake \> 150 g per day
* Habitual alcohol intake \> 6 drinks per day
* Use of fish oil capsules or other supplements containing omega-3 fatty acids
* Presence of cancer with \< 1 y of life expectancy
* Cognitive impairment, as indicated by the Mini Mental State Examination (score \<= 21)
* Unintended weight loss \> 5 kg in the past year
* Lack of facilities for cooled margarine storage at home
* Inability or unwillingness to comply with study procedures
D: Inclusion Criteria:

* Patients who have had at least 2 previous episodes of atrial fibrillation and an implanted pacemaker.

Exclusion Criteria:

* Patients with chronic atrial fibrillation

Answer: B