A
B
C
- Carpal tunnel syndrome
- Cataract
- Celiac disease
- Cervical cancer
- Chickenpox
- Chlamydia
- Cholelithiasis
- Chromosomal abnormalities
- Chronic fatigue syndrome (CFS)
- Chronic kidney failure
- Chronic obstructive pulmonary disease (COPD)
- Cirrhosis
- Cold and flu
- Cold sores
- Colitis
- Colorectal cancer
- Coronary artery disease (CAD)
- Crohn's disease