Clinical Research Directory

Inclusion Criteria: 1. Be age 65 or over. 2. Be diagnosed with stage I-III Cancer 3. Have completed curative intent treatment ≤10 years prior to screening Patients on the following endocrine therapies are allowed to enroll (Anastrozole,Leuprolide acetate, and Bicalutamide) 4. Have a Fried's Frailty Score (FFS) of ≥ 1 5. Able to provide informed consent Exclusion Criteria: 1. Have chemotherapy or other systemic cancer treatment planned to occur during the study period. 2. Have abnormal liver function tests (ALT, AST, and bilirubin) per most recent available lab test (within 3 months of screening) * 3 times institutional upper limit of normal for ALT and AST * 1.5 times institutional upper limit of normal for bilirubin 3. Have uncontrolled or unmanaged liver disease. 4. Consume more than 6 cups of green tea per day. 5. Have known allergies to caffeine. 6. Be diagnosed with a major psychiatric illness requiring hospitalization within the last year. 7. Be diagnosed with dementia. 8. Cannot provide informed consent due to lack of decision-making capacity (as determined by the patient's oncologist).