Why Are Veins Blue?

by | Nov 22, 2021 | Blog | 0 comments

Have you ever looked at the veins in your arms or legs and wondered, “If blood is red, why are my veins blue?” You might be surprised to learn that veins aren’t blue. In fact, they’re mostly colorless. It’s the blood inside the veins that helps give them color. While all types of blood are shades of red, blood flowing through the veins has more of a bluish tinge because it lacks oxygen. Although blood in the arteries comes directly from the heart and is bright red, the blood in human veins has surrendered much of its oxygen to the tissues, which means it has a blue tinge as it returns to the heart.

Veins also appear blue because of how light interacts with the body and skin; it’s a trick that light plays on our eyes. The blood in your veins appears blue because you’re looking at them through layers of skin and fat, which absorb blue light. Subcutaneous fat only allows blue light to penetrate the skin to the veins, so this is the color that’s reflected back to the retina (the part of the eye that sends visual information to your brain).

If you have children in your life, then you’ve probably fielded plenty of questions like, “Why are my veins so blue?” And you may have found yourself wondering the same thing. Now that you understand why veins are blue, let’s talk about how to take care of them.

How to keep your veins healthy

The human body has about 60,000 miles of veins that carry blood, nutrients, and oxygen to every cell in the body. They have a big job to do. That’s why it’s important to keep them healthy. When veins aren’t working properly, blood can collect and pool inside the vein and lead to varicose veins. Varicose veins are enlarged, twisty veins that sometimes bulge out of the leg.  Here are a few things you can practice every day to improve the health of your veins:

  • Let’s get physical
    A sedentary lifestyle is associated with varicose veins. If you have a desk job, get up once every 30 minutes and move your body. Short walks throughout the day will help with circulation and get the blood pumping. If you can’t take a walk or swap sitting for standing, try circulation exercises you can do at your desk like heel and toe raises, ankle rotations, and calf stretches.
  • Good foods only
    Put down those processed snacks and reach for colorful fruits and green leafy vegetables instead. Fueling your body with plenty of nutrients, minerals, and antioxidants keeps your veins flexible and allows them to contract and dilate more easily, which means the blood flows properly. Don’t forget to add in plenty of fiber; it’s a key nutrient for digestion and guards against excess abdominal pressure so your veins can flow freely from your torso to your lower extremities.
  • Just say no
    The chemicals in tobacco smoke can deoxygenate your blood and make it thicker, which decreases circulation and increases your risk for varicose veins and blood clots.
  • Dress to compress
    If you have a family history or other risk factors of venous insufficiency, your doctor or vein care specialist may recommend medical-grade compression stockings. These stockings come in many different sizes and lengths to help contract muscles around the veins to help move blood back toward the heart. In addition to wearing compression socks, it’s a good idea to elevate your legs over your heart a few times a day to give your circulation an added boost.

If you’re experiencing any type of vein issue, like heaviness or swelling, ask your healthcare provider to refer you to a Virginia Vein Care location near you for expert care and treatment. Our specialists are skilled and experienced in the safe treatment of several vein problems like spider veins, varicose veins, venous insufficiency, deep vein thrombosis, and more.