On average, your body has about 5 liters of blood continually traveling through it via the vessels of your circulatory system, according to The Franklin Institute 1. Your vascular system is made up of three types of vessels: arteries, which carry blood away from your heart; capillaries, which connect arteries to veins; and veins, which carry blood back to your heart. Eating certain foods can help encourage healthy activity throughout your vascular system.

Niacin-Rich Foods

Niacin, a member of the B-vitamin family, helps encourage blood-vessel efficiency by improving circulation. According to University of Pennsylvania's Perleman School of Medicine, niacin stimulates the release of a particular fat, known as prostaglandin, or PGD2, that causes blood vessels to widen 3.cause:

• According to University of Pennsylvania's Perleman School of Medicine
  
• niacin stimulates the release of a particular fat
  
• known as prostaglandin
  
• or PGD2
  
• that causes blood vessels to widen [3](https://www.pennmedicine.org/news/news-releases/2012/april/penn-study-cautions-use-of-dru 'inline-reference::University of Pennsylvania Health System
  
• Perelman School of Medicine: Penn Study Cautions Use of Drugs to Block "Niacin Flush" in Heart Patients')

Niacin-rich food sources include beets, beef liver, salmon, tuna and sunflower seeds. Breads and cereals are typically fortified with niacin. In addition, foods such as

• poultry
  
• red meat
  
• eggs
  
• dairy products contain tryptophan
  
• an amino acid that your body converts into niacin

Cocoa-Based Foods

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Indulging in chocolate may give your vascular system a boost. Substances found in cocoa called flavanols are believed to improve vascular activities as well as lower blood pressure for coronary artery disease patients, according to University of California, San Francisco 4. UCSF interventional cardiologist Yerem Yeghiazarians says that the results of a one-month study on 16 coronary artery disease patients revealed that patients who ingested flavanol-containing cocoa showed improved blood vessel health and increased circulation of vessel-building cells. Dark chocolate contains the most benefits due to its high flavanol content. Because cocoa solids are separated during the manufacturing process, milk chocolate and white chocolate contain little or no flavanols.

Omega-3 Fatty Acid Foods

Omega-3 fatty acid, a type of polyunsaturated fat, helps keep your blood vessels flexible and reduces excess blood clotting, according to Stanford University Medical Center 2. SUMC states that this beneficial effect on the vascular system may decrease the risk of sudden cardiac death. Foods rich in omega-3 fatty acids include flax seeds, walnuts, canola oil and fatty fish, such as:

• salmon
  
• herring
  
• sardines
  
• trout

Vitamin E-Rich Foods

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Vitamin E helps widen blood vessels, which stimulates the smooth flow of blood. In addition, vitamin E helps prevent clots from forming in blood vessels. Vitamin E is also a powerful antioxidant that helps protect body tissues from free radicals, which are unstable molecules that damage cells, tissues and organs. Include vitamin E-rich foods, such as:

• almonds
  
• peanuts
  
• wheat germ
  
• spinach
  
• broccoli
  
• sunflower seeds
  
• sunflower oil
  
• in your food plan to help increase your vascular health