Angelica is a genus of about 60 species of tall biennial and perennial herbs in the family Apiaceae, native to temperate and subarctic regions of the Northern Hemisphere, reaching as far North as Iceland and Lapland. They grow to 1–3 m tall, with large bipinnate leaves and large compound umbels of white or greenish-white flowers. Angelica acutiloba root (Japanese Dong Quai), used for treatment of gynecological disorders, is currently cultivated in Taiwan. The present study evaluated the preventative effect of Angelica acutiloba root (Japanese Dong Quai) on the induction of insulin resistance. Angelica species grow to 1–3 m tall, with large bipinnate leaves and large compound umbels of white or greenish-white flowers. Although their flowers are pollinated by a great variety of insects (the generalist pollination syndrome), the floral scents are species-specific, and even specific to particular subspecies.