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Nutricost Guarana Powder ReviewGuarana Capsules for Focus -
Below, discover some of the ingredient's most notable health effects:. When it comes to antioxidants , guarana doesn't disappoint. The Amazonian berry offers antioxidant compounds like theobromine, tannins, saponin, catechins, and caffeine, according to Paula Doebrich, MPH, RDN , registered dietitian and founder of Happea Nutrition.
These antioxidants help the body fight off free radicals, Naidoo tells mbg, ultimately protecting cells, tissue, and organs from oxidative stress. If guarana had a claim to fame, this would be it.
As Naidoo notes, "Guarana [promotes] energy due to its caffeine content, which is stimulating for both the body and mind. As you can imagine, this can be a lifesaver when you need to shake off physical and mental tiredness. The high content of antioxidants in guarana also lends a hand to these cognitive benefits, says Naidoo.
These compounds help support brain health, which is key for optimal focus and mental clarity. According to Pasquariello, the caffeine in guarana nurtures cognitive function and performance, including important processes like memory, learning, processing, and attention.
Case in point: According to a scientific review in the journal Global Psychiatry , caffeine is considered to be a nootropic—i. The same review found that guarana improved reaction time and accuracy of task performance in young, healthy adults, further bolstering this botanical's cognitive benefits.
Moreover, in a Pharmacology Biochemistry and Behavior study, guarana was clinically shown to work synergistically 4 with Panax ginseng to promote cognitive performance.
As a source of caffeine, guarana may also help promote digestive function, notes Doebrich. What's more, the tannins in guarana may support the formation of stool by regulating water secretion 6 in your GI tract, as indicated in a scientific review in the International Journal of Molecular Sciences.
Over time, free radicals and oxidative stress can reduce skin elasticity and speed up signs of skin aging 7 , such as fine lines. However, consuming plenty of antioxidants can help protect skin tissue against these effects, especially as we get older.
As sources of antioxidants, guarana tea and supplements can aid your skin by supporting your body's natural antioxidant defenses. Additionally, a review from Skin Pharmacology and Physiology states the caffeine in guarana can enhance blood flow to the skin 8 , helping it look healthier and more youthful.
Due to the rich antioxidant content of guarana, the ingredient may have cardioprotective effects, according to a scientific review in Comprehensive Reviews in Food Science and Food Safety. Specifically, the antioxidants in guarana have been found to protect lipid levels , which is crucial for maintaining cardiometabolic health.
Interestingly, guarana might benefit the very body part it resembles. According to a compelling study 9 in the Journal of Functional Foods , the antioxidants in guarana can help nurture eye health and vision. Needless to say, it's a guarana benefit you probably didn't see coming pun intended.
Guarana, like other sources of caffeine e. Although complications and complaints are rare, side effects are possible in some cases.
For example, guarana can affect blood pressure, so it may have a negative impact if you're sensitive to caffeine or have blood pressure concerns. Additionally, ingesting too much of the ingredient can cause jitters and contribute to caffeine crashes , while taking it too late in the day can mess with your beauty sleep.
As Naidoo notes, we all react to caffeine differently, largely due to the uniqueness of our liver metabolism genetics, as well as our individualized gut microbiomes.
That said, it's important to pay attention to how you react to caffeine-containing ingredients—guarana or otherwise—and use that information to personalize the quantity and timing of your intake. To play it safe, avoid high doses of guarana, as you don't need much to reap the benefits.
It's also a good idea to consult your health care provider before adding guarana to your routine, just as you would with any supplement, she adds. Guarana, like coffee, is a multidimensional plant with thousands of years of historical use behind it.
Guarana contains both caffeine and other antioxidants, which support multiple areas of well-being—including the brain, skin, gut, and eyes.
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Close Banner. Functional Food expert reviewed. Author: Kirsten Nunez, M. Ashley Jordan Ferira, Ph. By Kirsten Nunez, M. Contributing writer. Kirsten Nunez is a health and lifestyle journalist based in Beacon, New York. She has a Master of Science in Nutrition from Texas Woman's University and Bachelor of Science in Dietetics from SUNY Oneonta.
Due to its strong antioxidant and antimicrobial properties, guarana is popular in the cosmetics industry as an ingredient in anti-aging creams, lotions, soaps and hair products. Moreover, its caffeine content aids blood flow to the skin Test-tube studies have shown that the antioxidants in guarana may significantly reduce age-related skin damage 9.
Guarana has antioxidant and antimicrobial properties, making it a common additive in cosmetic products. It may aid blood flow to your skin, reduce damage linked to aging and minimize undesirable features, such as saggy skin and wrinkles.
Animal and test-tube studies suggest that guarana may protect against DNA damage, suppress cancer cell growth and even trigger cancer cell death 34 , 35 , Another test-tube study found that guarana suppressed the growth of cancer cells in the colon, as well as stimulated their death Scientists believe that the potential anti-cancer properties of guarana stem from its content of xanthines, which are compounds that are similar to caffeine and theobromine.
That said, though the results of test-tube and animal studies are promising, more human-based research is needed. Animal and test-tube studies have found that guarana may have anti-cancer properties.
However, human-based research is required before recommending guarana for treatment. One of these bacteria is Escherichia coli E. coli , which lives in the intestines of humans and animals. Most E. coli bacteria are harmless, but some can cause diarrhea or illness 38 , Studies have also found that guarana can suppress the growth of Streptococcus mutans S.
mutans , a bacteria that can cause dental plaques and tooth decay 40 , Guarana contains compounds that may inhibit or kill harmful bacteria, such as E. coli and Streptococcus mutans. Things like sunlight, poor diet and certain lifestyle choices like smoking can wear down your eyes over time and increase your risk of eye-related disorders Guarana contains compounds that fight oxidative stress, a major risk factor for age-related eye disorders like macular degeneration, cataracts and glaucoma One study found that people who consumed guarana regularly had better self-reported vision than people who consumed it sparingly or not at all In the same study, scientists performed test-tube experiments to discover if guarana could protect eye cells against compounds that create oxidative stress.
Guarana significantly reduced the amount of DNA damage and eye cell death, compared to a placebo That said, there is limited research in the area of guarana and age-related eye disorders.
Test-tube studies have found that guarana may combat oxidative stress, which is linked to age-related eye disorders. However, this area of research is limited, so more human-based studies are needed before providing recommendations.
Research shows that guarana has low toxicity in low-to-moderate doses 19 , 46 , In high doses, guarana may cause side effects similar to those of excessive caffeine intake , including 48 , 49 :. Pregnant women should avoid or limit guarana intake, as caffeine can cross the placenta. Too much caffeine may cause growth abnormalities in your child or increase the risk of miscarriage Although guarana has no recommended dosage, most human-based research has found that doses as low as 50—75 mg can provide the health benefits linked to guarana 16 , Guarana appears to be safe and is widely available.
In high doses, it may have similar side effects to those of excessive caffeine intake. Guarana is commonly touted for its ability to reduce fatigue, boost energy and aid learning and memory. It has also been linked to better heart health, weight loss, pain relief, healthier skin, lower cancer risk and a decreased risk of age-related eye diseases.
Most research shows that doses between 50—75 mg of guarana are sufficient to provide you with health benefits, though there is no official dosage recommendation. Whether you want to boost your energy levels or simply improve your overall health, guarana may be worth a try.
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Nutrition Evidence Based 12 Benefits of Guarana Plus Side Effects. By Ryan Raman, MS, RD — Updated on June 13, Share on Pinterest. Rich in Antioxidants. Can Reduce Fatigue and Improve Focus. May Help You Learn Better. May Promote Weight Loss. May Relieve Chronic Diarrhea and Treat Constipation.
May Boost Heart Health. May Provide Pain Relief. May Improve Skin Appearance.
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