They’re one of the most concentrated natural sources of a compound called sulforaphane.

Sulforaphane activates a cellular pathway known as NRF2.

NRF2 functions like a protective switch inside the body.

When activated, it signals cells to increase production of enzymes involved in:

• antioxidant defense
• detoxification processes
• inflammation regulation
• cellular protection

Most people focus on adding antioxidants directly.

But the body is designed to produce its own protective enzymes when pathways like NRF2 are activated.

That’s why researchers have become so interested in compounds that support this system.

Broccoli sprouts contain extremely high levels of glucoraphanin, the precursor that forms sulforaphane.

In fact, broccoli sprouts can contain 10–100 times more of these compounds than mature broccoli.

When the plant is chopped, chewed, or crushed, glucoraphanin interacts with an enzyme called myrosinase to form sulforaphane.

From there, sulforaphane activates NRF2 and helps the body increase its own protective defenses.

But like many biological systems, this pathway doesn’t operate in isolation.

Its effectiveness is influenced by factors such as:

• overall oxidative stress levels
• liver and detoxification function
• gut health
• nutrient status
• mitochondrial function

Understanding how these systems interact helps explain why certain compounds receive so much attention in research.

And why foods like broccoli sprouts are often discussed in conversations about cellular protection and resilience.