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This week we’ll be discussing sulforaphane, a bioactive compound found in most cruciferous vegetables, but especially broccoli sprouts.
Research suggests that sulforaphane helps activate the immune system, reducing oxidative stress and inflammation while supporting healthy angiogenesis, the process of growing and maintaining blood vessels.
→ What exactly is sulforaphane, and how does it work inside the body?
Let’s take a closer look at one of the most studied compounds in the plant kingdom and why it has attracted growing interest from researchers around the world.
What Is Sulforaphane?
Sulforaphane is a sulfur-containing compound formed when cruciferous vegetables such as broccoli, brussels sprouts, and kale are chopped or chewed.
These vegetables naturally contain glucoraphanin, a precursor compound, and myrosinase, an enzyme stored separately within the plant. When the plant cells are broken open during cutting, chewing, or blending, myrosinase converts glucoraphanin into sulforaphane.
If vegetables are heavily cooked and plant myrosinase is reduced, certain gut bacteria can also help convert glucoraphanin into sulforaphane during digestion.
What helps convert glucoraphanin into sulforaphane?
Sulforaphane and Angiogenesis
Research suggests sulforaphane may influence how blood vessels respond to inflammation and low-oxygen stress.
Studies have shown sulforaphane may:
Influence VEGF activity, a key signaling molecule that helps direct the formation of new blood vessels
Help protect endothelial cells from oxidative damage
Reduce inflammatory signals
Affect hypoxia-related pathways that stimulate dysregulated angiogenesis in diseased tissues
→ Why does this matter? Healthy blood vessels are responsible for delivering oxygen and nutrients throughout the body. By helping regulate inflammation, oxidative stress, and angiogenic signaling, sulforaphane may support the body's ability to maintain a healthy vascular system which in turn supports long term health.
While research is ongoing, these findings suggest that sulforaphane-rich foods such as broccoli sprouts may be one dietary tool for promoting long-term cardiovascular and metabolic health.
Sulforaphane & Cancer
Sulforaphane is best known for activating Nrf2, a cellular defense pathway that increases production of antioxidant and detoxification enzymes.
Researchers have studied sulforaphane for its potential role in cancer prevention because it may:
Help cells neutralize reactive oxygen species before DNA damage occurs
Slow cancer cell growth and division
Promote apoptosis, the programmed death of damaged cells
Influence epigenetic regulation, including HDAC inhibition, which can affect cancer-related gene expression
→ Sulforaphane is also being studied for how it may help limit the abnormal blood vessel growth tumors rely on for continued expansion.
Sulforaphane and Eye Health
Sulforaphane may support ocular health through a similar pathways by protecting retinal and ocular tissues from oxidative stress and inflammation. In preclinical studies, sulforaphane has demonstrated protective effects in models of age-related macular degeneration (AMD), diabetic retinopathy, cataracts, and other retinal disorders through activation of the Nrf2 antioxidant pathway and modulation of inflammatory signaling.
Researchers have observed reduced retinal photoreceptor degeneration, improved retinal pigment epithelial cell resilience, and protection against oxidative damage in both retinal and lens tissues. More research is needed to determine the role of sulforaphane in the prevention or management of ophthalmic disease.
Food Sources of Sulforaphane
Broccoli Sprouts → Among the richest known sources.
Cruciferous Vegetables → Broccoli, brussel sprouts, kale, cauliflower
Cooking methods can affect availability, light steaming may preserve activity better than prolonged cooking.
Download our Free Bioactive Spotlight Guide to learn more about sulforaphane and how to incorporate it into your diet.
Don’t miss this weeks youtube video with our mascot Dr. Angio bringing complex health and research topics to life.
Best wishes,
- The Angiogenesis Foundation
P.S. Like what you’re reading? Support our mission to advance research and share science-backed health insights.
Make a donation to the Angiogenesis Foundation today.
Check out the Angiogenesis Foundation Green Tea from Harney & Sons to support your vascular health.
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