Cupressaceae family includes 27–30 genera (17 monotypic), which include the junipers and redwoods, with about 130–140 species in total. The Cupressaceae trees contain a wide range of extractives, especially terpenes and terpenoids. Many plants of this family or their derived products have been reported for their cytotoxicity, and they have been found to induce apoptosis in cancer cells. Decoction of Juniperus oxycedrus subsp. oxycedrus L. leaves is used internally to lower blood glucose levels in Turkey.