Don’t let the steam escape: The surprising reason your broccoli is losing its superpowers

Boiling broccoli significantly diminishes its health benefits, with up to 70% of vital flavonoids lost in the water. This common cooking method deactivates crucial enzymes like myrosinase, hindering the production of cancer-fighting sulforaphane. Steaming or microwaving with minimal water are superior, preserving nearly 90% of nutrients. Adding mustard seeds can help restore lost benefits.