Eligibility Details:
Inclusion Criteria:
- Between age 18 and 35
- Able to provide stool samples at no risk to yourself
- Weigh at least 110 pounds
- Physically able to perform a cognitive examination administered on a laptop with a
trackpad (no significant language, hearing, visual or sensory-motor problems)
Exclusion Criteria:
- History or current diagnosis of acute or active major psychiatric disorder (major
depressive disorder, generalized anxiety disorder, post-traumatic stress disorder,
schizophrenia, bipolar disorder, alcohol or drug dependence, etc)
- History or current diagnosis of any neurological disorder (convulsion or seizure
disorder, epilepsy, Huntington's Disease, Multiple Sclerosis, ALS, Parkinson's,
dementia, stroke, etc)
- Use of steroid medications, including but not limited to steroid inhalers or creams or
lotions that contain steroids, such as hydrocortisone
- Drink greater than 2 alcoholic beverages per day on average
- Recreational drug use, including but not limited to marijuana, cocaine, ecstasy, etc,
within the past month
- Known food allergies to soy products
- Dietary restrictions/allergies of milk or dairy products including food products that
do not contain nuts, peanuts, eggs, or shellfish, but was manufactured in the same
space as these food allergens
- History or current diagnosis of autism or pervasive development disorder
- History or current diagnosis of any learning disability
- History of fainting during blood draws
- Use chewing tobacco
- Currently pregnant
- Currently breastfeeding
- BMI higher than 27.5 or less than 17
- History or current diagnosis of irritable bowel syndrome
- History or current diagnosis of inflammatory bowel disease
- History or current diagnosis of type 2 diabetes
- History or current diagnosis of chronic kidney disease with decreased kidney function
- History or current diagnosis of intestinal obstruction
- History or current diagnosis of untreated colorectal cancer
- Colonoscopy within the past month
- Oral antibiotics within the past month