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The Scoop On Spirulina: Should You Eat This Microalgae?

May 15, 2017

When fitness blogger Heather Gannoe heard about a new supplement that allegedly contained a “treasure trove” of energy, she was intrigued. No, it wasn’t coffee, goji berries or guarana. It was spirulina — a blue-green microalgae. Touted as a source of protein, B vitamins and iron, this lesser-known superfood is rumored do everything from boost your immunity levels to reduce your anxiety.

After doing some research, Gannoe, an exercise physiologist, decided to give spirulina a try. She’d been a vegetarian for about two and a half years — and was always searching for new plant-based ways to get all the protein and vitamins she needs. “But those weren’t the initial reasons I started taking the algae,” she says. “I take algae primarily for the energy boost.”

Mircoalgae can be consumed in a variety of ways. “You can take it in pill form or add the powder to smoothies or juices,” says Alissa Rumsey, R.D., a spokesperson for the Academy of Nutrition and Dietetics – though she cautions that it will turn your food green.

Related: 5 Healthier Ways to Detox (That Aren't Juice Cleanses)

Gannoe now takes three spirulina capsules a day, the amount recommended by her brand of supplement. She describes experiencing a sustained energy that lasts throughout the day, unlike the quick jolt you’d get from an energy drink. Intrigued? Find out the pros — and cons — of adding this new sea green to your supplement routine.

Spirulina Benefits 101: The New Way to Get Your Green On?

Spirulina is just one kind of microalgae, the tiny aquatic cousin to seaweed and kelp. It’s actually not a plant at all but a member of the bacteria kingdom that’s naturally found in salt water and bodies of fresh water. It’s a diet mainstay for many varieties of fish, making it a key part of the food chain.

Despite its growing buzz in the supplements world, the blue-green microalgae isn’t a new discovery. It’s been called one of the oldest and most potent superfoods. “It’s high in protein, B vitamins, beta carotene [and] vitamin E as well as iron, copper and selenium,” says Rumsey. “It also contains gamma-linolenic acid (GLA), an omega-6 fatty acid.”

According to Lori Zanini, RD and national media spokesperson for the Academy of Nutrition & Dietetics, many of those taking spirulina are vegan or vegetarian. “The reason is because it’s such a concentrated source of protein,B vitamins — especially B12 — and iron,” she says. B12 is normally found exclusively in animal protein — which is why non-meat eaters might be drawn to this algae. Other forms of microalgae may also be a good source of omega-3 fatty acids, a nutrient commonly found in fatty fish.

Some believe that spirulina’s benefits extend beyond the nutritional. “People take it for everything from weight loss to PMS to ADHD,” says Zanini. There has been some promising research, which indicates that spirulina may help with nasal allergies. In recent years, Zanini says that there has been increasing interest in spirulina as an energy booster, too.


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