Twenty adult male smokers ingested 600 ml of green tea made from Camellia sinensis for 4 weeks. Their lipid profile, C-reactive protein, total antioxidant capacity, oxidised LDL, soluble vascular cell adhesion molecule 1, soluble intercellular adhesion molecule 1 and soluble P-selectin were measured at baseline and at 2 and 4 weeks after green tea ingestion. Plasma soluble P-selectin levels decreased significantly after 2 and 4 weeks of green tea ingestion compared with those before green tea ingestion. Plasma concentrations of oxidised LDL decreased significantly after green tea ingestion.