Eligibility Criteria:
Inclusion Criteria:
* no consumption of alcohol-containing beverages within 48 hours of testing
* no consumption of caffeine-containing beverages within 48 hours of testing
* no strenuous exercise within 48 hours of testing
* be able to fast overnight (\>10 hrs)
Exclusion Criteria:
* self-reported active infection or illness of any kind
* diabetic
* diagnosed with an autoimmune disease including but not limited to rheumatoid arthritis, lupus, Multiple sclerosis, Guillain-Barre syndrome, Psoriasis
* diagnosed GI-related health problems
* using tobacco products
* allergic or hypersensitive to aloe vera
* if female, pregnant or lactating
* using antibiotics
* using a medication/dietary supplement that alters immune or digestive function or that might otherwise impact study outcomes including, but not limited to supplements with immune, immunity, or defense in their name, immunosuppressants including Cyclosporines (Neoral®, Gengraf®, Sandimmune®), Tacrolimus (Prograf®, FK506), Mycophenolate mofetil (CellCept®), Prednisone, Azathioprine (Imuran®), Sirolimus (Rapamune®), Daclizumab and Basiliximab (Zenapax® and Simulect®), OKT3® (monoclonal antibody), Anti-Fungal Medications (Mycelex Troche®, Nystatin® Swish and Swallow, and Diflucan®), Antiviral Medications: Zovirax® (acyclovir), Cytovene® (ganciclovir), and Valcyte® (valganciclovir), Diuretics: Lasix® (furosemide), Antibiotics: Bactrim® (septra), Anti-Ulcer Medications: Prilosec® (omeprazole), Prevacid® (lansoprazole), Zantac® (ranitidine), Axid® (nizatidine), Carafate®(sucralfate), Pepcid®