Topics
Browse the research by topic.
Start with the basics of how blood moves through the body, or jump straight to an area of research. Every topic page links to the summaries and original sources behind it.
The basics
How circulation works
Heart, arteries, veins, and capillaries: a plain-English map of the system the research is about.
The basics
How blood flow is measured
The lab and clinic tools behind circulation studies, and what each one actually captures.
The basics
Reading a study
Trials, cohort studies, reviews, and animal research — what each design can and can’t show.
Movement
Movement and blood vessels
Walking, exercise, and sitting time in circulation research.
Nutrition
Dietary nitrates and circulation
Beets, leafy greens, and nitric oxide: what researchers are studying.
Nutrition
Salt, potassium, and blood pressure
How dietary patterns are studied in relation to blood pressure and vessel health.
Lifestyle
Rest, stress, and vascular function
Sleep and stress research, and the difficulty of measuring both well.
Lifestyle
Heat, cold, and circulation
How the body redirects blood flow in response to temperature.
Erections
Erections and blood flow
Why erection problems are often an early sign of artery changes, and what the research supports.
Aging
Circulation across the lifespan
How arteries change with age, and how much still responds.
Research Revisited
Earlier studies. Fresh context.
Classic circulation research, read alongside today’s evidence.
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