Protein & Nutrition Blog – Marmels
Protein & Nutrition Blog – Marmels
Does Dark Chocolate Improve Blood Flow? The Science
by Mo Mandegar, PhD
on Jun 08 2026
Cacao flavanols help your blood vessels release nitric oxide, which relaxes and widens them. But the flavanols that do the work are fragile, and heavy processing destroys up to 90% of them. Here is the dose research points to, and how to tell whether the chocolate in your hand still carries enough to matter.
