Guarana is a Brazilian plant native to the Amazon basin appreciated for its fruits which make it one of the key ingredients of the best natural fat burners .
A ripe guarana fruit is about the size of a coffee berry. It resembles the human eye, with a red shell surrounding a black seed covered with a white aril.
Guarana extract is made by turning the seeds into a powder .
Amazonian tribes have used guarana for centuries for its therapeutic properties .
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Guarana for weight loss
So how does guarana work as a weight loss aid?
As guarana extract is incredibly high in caffeine , it also acts as an appetite suppressant and helps suppress appetite throughout the day . This means that people consume fewer calories in order to achieve a healthy weight loss rate.
In addition to this, the caffeine contained in guarana can also increase metabolic rates, so the body metabolizes calories faster and more efficiently .
This is due to the presence of not only caffeine, but also other xanthine-stimulating alkaloid substances such as theobromine. These substances stimulate the release of epinephrine and norepinephrine in the body, which help burn fat stored in the muscles for a greater and faster rate of fat loss.
It is well known that the guarana seed contains powerful levels of caffeine, double that of the humble coffee bean, but the stimulating effects of guarana extract are not only excellent for providing energy and reduce fatigue (although this makes it a popular additive in energy drinks and hot drinks).
Guarana is very commonly used in fat burning supplements as a fat loss ingredient because its impressive caffeine content can help people achieve their weight loss goals over time.
Guarana is classified as a metabolic stimulant, which means that it can help burn more calories throughout the day by due to its high caffeine content .
Overall, it can increase fat metabolism, improve weight loss and increase the amount of energy used for basic metabolic functions, such as respiration and digestion .
In guarana extract , the caffeine concentration can be 2x-3x higher than that found in the seed.
In an 8-week clinical trial of 67 people, an herbal supplement containing L-carnitine and guarana resulted in significant reductions in weight and hip circumference .
In another clinical trial with over 100 people, Supplement 1 (with guarana, asparagus, green and black tea, mate, and red beans) combined with Supplement 2 (with red bean pods, garcinia cambogia and chromium yeast) and taken for 12 weeks reduced body fat .
In addition to burning fat, guarana can prevent completely fat production by decreasing the production of proteins that contribute to fat production and increasing the production of those that prevent it, as seen in a cell study .
It contains an impressive range of stimulants, such as caffeine, theophylline and theobromine. Guarana also has antioxidants, such as tannins, saponins and catechins.
Guarana Weight Loss Benefits: The Evidence
The weight loss benefits of guarana can be found in plenty of research; in a 2001 study that recruited healthy, overweight volunteers, an herbal blend of guarana, yerba mate, and damiana was found to significantly reduce weight in overweight volunteers compared to a placebo.
A second study showed similar results for a mixture of guarana and ephedra (known colloquially as ma huang), where experimental subjects lost an average of 4 kg compared to an average weight loss of 0.4 kg for a placebo control group.
As a versatile natural additive, guarana is very effective for slimming and losing weight .