Flaxseed is a nutrient-rich seed derived from the flax plant, known for its high content of omega-3 fatty acids, fiber, and lignans (plant compounds with antioxidant properties). It supports heart health, aids digestion, and may help reduce inflammation. Flaxseed can be consumed whole, ground, or as oil, and is often added to smoothies, yogurt, or baked goods for a nutritional boost.