Does What You Eat Affect Your Brain (WYE)

University of Washington

Status: Completed

Conditions: Obesity; Eating; Gliosis

Treatments: Other: Diet modification #1; Other: Diet modification #2; Other: Diet modification #3

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT05626907

1R01DK133356-01 (U.S. NIH Grant/Contract)

STUDY00015328

Details and patient eligibility

About

The purpose of this study is to use magnetic resonance imaging (MRI) to evaluate the human hypothalamus for signs of inflammation in response to specific diets. This research may lead to a better understanding of how poor nutritional quality may lead to obesity through effects on regions of the brain known to regulate body weight.

Enrollment: 36 patients

Sex: All

Ages: 20 to 40 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Age 20-40 years
• Overweight: BMI 25-29.9 kg/m2
• Willing to undergo randomly assigned 14-day diet modification

Exclusion criteria

• History of bariatric surgery or active participation in weight-loss program
• Major medical or neurological disorder (e.g., diabetes, multiple sclerosis)
• Anemia or impaired kidney or liver function
• Known gallbladder disease or gallstones
• Hypertriglyceridemia (>350 mg/dl)
• Current use of orlistat or other weight-loss medications or other medications known to alter appetite (e.g., atypical anti-psychotics)
• More than moderate level of physical activity (>1000 met-min/wk)
• Pregnancy, menopause, or breastfeeding
• MRI contraindication (e.g., implanted metal, claustrophobia)
• Lifetime eating disorder
• Current smoking or heavy alcohol use (≥ 2 drinks per day for females and ≥ 3 drinks per day for males)
• Weight > 350 pounds (MRI limit)
• Dietary restrictions (e.g., vegan) incompatible with controlled diets

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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36 participants in 3 patient groups

Assigned Diet #1

Experimental group

Treatment:

Other: Diet modification #1

Assigned Diet #2

Experimental group

Treatment:

Other: Diet modification #2

Assigned Diet #3

Other group

Treatment:

Other: Diet modification #3