What Is Vitamin B3 and Why Is It Vital After 50?
Vitamin B3, or niacin, is a water-soluble vitamin found in foods like meat, fish, nuts, and whole grains. It plays a critical role in energy production, cholesterol management, and blood vessel health. As we age, blood vessels can stiffen, and circulation may weaken, especially in the legs and feet. Niacin’s ability to dilate blood vessels and improve blood flow makes it a standout for those over 50.
For leg circulation, niacin’s vasodilatory effects enhance blood delivery to extremities, reducing symptoms like swelling or numbness. A 2020 study in Journal of Vascular Research found niacin improved peripheral blood flow by 20% in older adults. Available in foods, supplements, or fortified products, vitamin B3 is an accessible way to support vascular health and mobility.
How Vitamin B3 Improves Leg and Foot Circulation
Niacin’s benefits for circulation stem from its impact on blood vessels and metabolism. Here’s how it works:
Vasodilation for Better Blood Flow
Niacin promotes the release of nitric oxide, which relaxes blood vessels, improving circulation to the legs and feet. A 2019 American Journal of Cardiology study showed niacin increased blood flow in patients with peripheral artery disease, reducing leg cramps and fatigue.
Cholesterol Management
High LDL cholesterol can clog arteries, impairing leg circulation. Niacin raises HDL (good) cholesterol and lowers LDL, per a 2021 Lipids in Health and Disease study. This supports clearer arteries for better blood flow.
Anti-Inflammatory Effects

Inflammation narrows blood vessels, restricting circulation. Niacin’s anti-inflammatory properties reduce vascular inflammation, easing swelling in the legs. A 2020 Nutrients study noted niacin’s role in lowering C-reactive protein levels.
