2270: Vitamin A & Carotenoids
Men, Aged 40-70
|To determine the amount of vitamin A the body absorbs from a vitamin A-rich plant source known as spirulina.
- Chronic use of antacids
- Inability to avoid large amounts of red, orange, yellow, and green fruits and vegetables for 9 weeks
|Length of Study:
||# of Visits:
||15 center visits.
Low-carotenoid diet for 9 weeks
||Can I Work?
||Yes, except for 6 study days
- Length of study
Total length of the study including resident stays and nonresident visits.
This does not mean you will be testing the entire time.
The length of time volunteers are required to stay overnight at the HNRCA. Residents have their own private room, bathroom, television, VCR, and phone during their stay.
The amount of reimbursement for travel and inconvenience.
- Number of visits
Total number of nonresident visits.
- Study diet
Indicates meals which will be provided by the HNRCA
- Can I work?
Indicates if you will be able to work and if so, when.
For more information, please complete our Study Inquiry Form or call Volunteer Services at (800) 738-7555 and a Recruiter will return your call as soon as possible.
We appreciate your interest in our program and we hope to work with you in the future.
The Recruitment Office
Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University