HEALTH & SCIENCE
The ėNOS Health & Science Library
Plain-English articles on nitric oxide and what it means for your heart, your arteries and your circulation — plus the science behind ėNOS and the foods and nutrients that support your body's own nitric oxide production.
Science You Can Trust
Australiana Life's Health & Science Library is designed to make the science of nitric oxide, cardiovascular health, circulation, nutrition and healthy aging understandable and useful.
Our educational articles are supported by published scientific research and have been scientifically reviewed by Jay Wilkins, ND, a naturopathic doctor, nitric oxide educator and nutritional supplement formulator with more than 25 years of natural-health experience and approximately two decades focused on nitric oxide science and nutrition.
Scientific review completed:
Heart & Arteries
How nitric oxide supports the heart, the arteries and healthy blood pressure.
- Nitric Oxide & Heart Health
Why nitric oxide is central to cardiovascular wellbeing and how ėNOS supports your body's own production.
- Healthy Arteries & Nitric Oxide
What keeps arteries flexible and responsive, and the role nitric oxide plays in arterial tone.
- What Supports Healthy Arteries as We Age?
The everyday habits and nutrients associated with healthy, resilient blood vessels.
- What Is Cardiovascular Health? Heart, Arteries & Circulation Explained
How the heart, arteries and circulation work together as one cardiovascular system.
- Heart Health vs. Cardiovascular Health: What's the Difference?
Two terms often used interchangeably — and what each one actually covers.
- The Endothelium: The Hidden Key to Healthy Blood Vessels
The single-cell lining of your blood vessels and why its health matters so much.
Circulation & Blood Flow
Circulation basics, blood flow and what changes as we get older.
- Healthy Circulation & Nitric Oxide
Signs of healthy circulation and simple ways to support blood flow throughout the body.
- Nitric Oxide & Blood Flow: How Are They Connected?
How nitric oxide signals blood vessels to relax, widening them for better blood flow.
- Healthy Circulation After 50: Why Blood Flow Matters
How circulation changes with age and practical ways to support healthy blood flow after 50.
- Understanding Vasodilation: How Blood Vessels Naturally Relax
What vasodilation is, how the body triggers it and the role nitric oxide plays.
Nitric Oxide Science
The underlying science: the molecule, the enzyme and the tissue that make it all work.
- What Is Nitric Oxide & Why Does It Matter? — Definitive Guide
A plain-English introduction to nitric oxide, the signalling molecule behind vascular health.
- What Is eNOS? The Enzyme Behind Natural Nitric Oxide Production
Endothelial nitric oxide synthase — the enzyme that produces nitric oxide inside your blood vessels.
- How Your Body Makes Nitric Oxide
The two pathways your body uses to produce nitric oxide, and what each one needs.
- What Affects Nitric Oxide Production?
Diet, movement, sleep, oxidative stress and the other inputs that shape NO output.
- Nitric Oxide & Oxidative Stress
How oxidative stress consumes nitric oxide and uncouples the eNOS enzyme.
- Nitric Oxide Research: From Discovery to the Nobel Prize
The EDRF discovery, the 1998 Nobel Prize and the research that followed.
Nutrition & NO Support
Foods, amino acids and supplements associated with nitric oxide production.
- How to Increase Nitric Oxide Naturally
Natural, everyday approaches to supporting your body's own nitric oxide production.
- Foods That Support Natural Nitric Oxide Production
Nitrate-rich and antioxidant-rich foods commonly associated with nitric oxide support.
- L-Arginine + L-Citrulline: Two Pathways Supporting Nitric Oxide
How these two amino acids work together in the nitric oxide pathway.
- Arginine vs. Citrulline: What's the Difference?
How the two amino acids differ in absorption, metabolism and role in the NO pathway.
- L-Citrulline Explained: From Citrulline to Arginine to Nitric Oxide
Why citrulline is absorbed so efficiently and how the kidneys convert it to arginine.
- L-Arginine & Nitric Oxide Explained
The amino acid eNOS uses directly as substrate — and what limits it.
- Why Combine L-Arginine & L-Citrulline?
The rationale for pairing an immediate substrate with a sustained replenishment route.
- Dietary Nitrates & the Nitrate–Nitrite–Nitric Oxide Pathway
The second route to nitric oxide, powered by leafy greens, beetroot and oral bacteria.
- Nitric Oxide Supplements: What Should You Look For?
What to look for — and what to be sceptical of — in a nitric oxide supplement.
Lifestyle & Healthy Aging
Movement, sleep, stress and everyday habits that support vascular health as we age.
- Nitric Oxide & Exercise Performance
How blood flow, oxygen delivery and nitric oxide relate to physical performance.
- Nitric Oxide & Exercise Recovery
Circulation, nutrient delivery and what recovery asks of your blood vessels.
- Lifestyle Habits That Support Healthy Nitric Oxide Production
The everyday habits most consistently associated with healthy nitric oxide biology.
- Exercise & Nitric Oxide: Why Movement Matters
Why moving blood is itself a signal to the endothelium — and what that means for training.
- Can a Sedentary Lifestyle Affect Nitric Oxide & Circulation?
What happens to vascular signalling when the body sits still for long stretches.
- Diet & Nitric Oxide: How Everyday Food Choices Matter
How everyday food choices feed the body's two nitric oxide pathways.
- Sleep, Cardiovascular Health & Nitric Oxide: What Do We Know?
What research suggests about sleep quality, cardiovascular health and vascular function.
- Smoking, Vascular Health & Nitric Oxide
Why smoking is one of the most damaging influences on endothelial function.
Lifestyle & Healthy Aging …continued
- Nitric Oxide, Energy & Staying Active as We Age
The link between circulation, everyday energy and staying active later in life.
- Nitric Oxide & Men's Sexual Health: The Blood-Flow Connection
Normal erectile function is a neurovascular event — and nitric oxide sits at the centre of it.
- Nitric Oxide & Oral Health: The Surprising Connection
Why the bacteria on your tongue are part of the body's nitrate-to-nitric-oxide pathway.
- Nitric Oxide & Aging: What Changes After 40, 50 and Beyond?
Nitric oxide output falls steadily with age. Here is what the research shows and why it matters.
- Why Does Nitric Oxide Production Change With Age?
The biology behind declining nitric oxide output over the decades.
- Healthy Aging: Supporting Circulation, Blood Flow & Nitric Oxide After 50
How circulation, endothelial function and nitric-oxide biology change after 50 — and the habits that support them.
- Nitric Oxide and Brain Health/Cognition
How nitric oxide supports cerebral blood flow and neuronal signalling, and what that means for brain health and cognition as we age.