The creator of Okinawa Flat Belly Tonic vaguely mentions certain trials and studies that took place using the formula. However, we can’t find any evidence these studies took place. As far as we can tell, nobody has studied or tested Okinawa Flat Belly Tonic in any professional setting using animals or humans.
However, the Okinawa Flat Belly Tonic sales page cites 19 studies on individual ingredients within the formula. We’ll review that evidence to determine if Okinawa Flat Belly Tonic really works – or if it’s another overhyped diet pill with zero evidence.
It’s no secret that your gut microbiome affects weight, immunity, and other aspects of your body. Your gut plays a crucial role in your overall health. In fact, approximately 90% of your immune system resides in your gut.
The makers of Okinawa Flat Belly Tonic cite
this 2018 study published in Genes. Researchers reviewed dozens of articles on gut microbiome and weight loss. Researchers found a specific connection between the use of prebiotic, probiotic, and symbiotic supplements and weight loss compared to a placebo, claiming there were “significant decreases in BMI, weight and fat mess” when participants used probiotics or prebiotics.
However, not all ingredients in Okinawa Flat Belly Tonic are backed by significant research. The company cites
this 2016 study from the Journal of Nutritional Biochemistry, for example, to justify the use of aronia juice. In that study, researchers gave aronia juice to mice, then observed an improvement in gut health and fat burning in mice.
Other cited studies involve humans. The company
cites this 2008 study linking the anthocyanins in acai juice to weight loss. Participants took acai juice or a placebo, and researchers observed the effects. Researchers found there were 2.3 to 3 times higher antioxidant levels in the acai juice and pulp group compared to the placebo group.
A significant amount of the Okinawa Flat Belly Tonic formula consists of polyphenol-rich fruit and plant extracts. It’s the largest part of each scoop (2,150mg of each 2,800mg scoop). So do polyphenols really help with weight loss? It’s possible.
Some research suggests polyphenol-rich foods can help with weight loss.
This 2017 study published in Nutrients, for example, found there was an inverse correlation between body weight and polyphenol levels in an elderly population over a 5 year period. In other words, older adults with a diet rich in polyphenols were likely to weigh less than adults with a diet lacking in polyphenols.
Another study published in Nutrients in 2010 found a similar association, showing that dietary polyphenols had beneficial effects on adiposity and obesity. Researchers reviewed available evidence on dietary polyphenols and obesity, finding polyphenols modulated obesity in many participants.
Overall, there’s evidence that the ingredients in Okinawa Flat Belly Tonic can help manage weight, metabolism, and other aspects of health and wellness, although dosages may be slightly lower than competing formulas at this price range.