Answer: Collard greens are one of the most keto-friendly vegetables you can find. At a mere 0.5 g of net carbs per serving, they have the versatility to fit into almost any meal.
Each serving of collard greens (1 cup, chopped) contains 0.5 g of net carbs. At only 12 calories per serving, they're not very substantial, but you can rest assured that collard greens won't interfere with your ketosis.
Collard greens are also a good source of protein, at 1.1 g per serving.
Collard greens are a cruciferous vegetable, a family of crop species that includes kale and broccoli. Scientists are interested in cruciferous vegetables because of evidence that suggests that they contain compounds that prevent cancer. More research is needed, but several studies have found that people who consume cruciferous vegetables like collard greens are less likely to develop lung or colon cancer.