Okra is low in calories but packed full of nutrients. The vitamin C in okra helps support healthy immune function. Okra is also rich in vitamin K, which helps your body clot blood. Okra contains antioxidants called polyphenols, including vitamins A and C. It also contains a protein called lectin which may inhibit cancer cell growth in humans. Studies using concentrated compounds from okra showed they inhibited the growth of breast cancer cells by up to 63%. Further research is needed for definitive proof of okra’s cancer-blocking properties.