This is generally not enough caffeine to have an impact on most people, but the response can vary from person to person. The commercially available varieties sold in the U. Low pH beverages may compromise the tooth enamel and increase the likelihood of tooth discoloration when drinking highly pigmented beverages, she says. To protect your teeth, Gastelum recommends drinking your kombucha in one sitting rather than sipping throughout the day, using a straw and rinsing your mouth with water after finishing.
Be mindful of how much you drink, too. Contact us at letters time. By Beth Krietsch. What is kombucha? Only a few clinical trials have investigated whether consuming fermented products can have a beneficial effect on health metrics such as blood pressure or insulin resistance. These have so far returned mixed results, with the studies often containing severe flaws in their design.
But these types of studies are vague and notoriously difficult to interpret. It could be genetics or because they eat more fish or the fact that overeating is less common. There are so many potential confounding factors at play. Because the rise in popularity in fermented foods in the UK is a relatively recent phenomenon, the industry is in many ways, a bit of a wild west.
As a result, scientists say that fermented foods found on supermarket shelves can have high sugar or sodium contents. One common claim on fermented food labels is that they contain probiotic organisms, specific microbial strains that have a proved health benefit. But in reality, relatively few products are tested to find out the precise types of bacteria that are present.
Change may be on the cards, however. Such is the interest in fermented foods that governing bodies have been forced to get involved, particularly in the US, where sales of kombucha are growing at a faster rate than any other soft drink. The National Institute of Health is currently funding clinical trials into various fermented products and there are high hopes that this will yield more concrete information on their health benefits in the next five to 10 years.
And while much has been written about the potential of fermented foods to have an impact on what bacteria live in our guts, Marco believes any notable benefit may instead come from their interactions with the small intestine, possibly by stimulating the immune system and preventing toxins from getting into the bloodstream. It also happens to be the place where most of our immune cells are. Kombucha is not advised for pregnant or breastfeeding women, or those who have a compromised immune system.
There have been some reports that drinking too much can lead to unpleasant side effects, such as stomach ache, nausea and dizziness. Prolonged fermentation is not recommended because of the accumulation of organic acids, which might reach harmful levels.
Fermented foods, including kombucha, are high in histamine, so those with a histamine intolerance should be wary that consuming kombucha may exacerbate symptoms. Always check with your GP if you are concerned about introducing kombucha to your diet, or if you have any adverse side effects after consuming it. The health benefits of kefir The health benefits of miso The health benefits of apple cider vinegar. More digestive health recipes and tips Why are fermented foods good for you?
How does diet affect gut health? Jo Lewin is a registered nutritionist RNutr with the Association for Nutrition with a specialism in public health. All health content on bbcgoodfood. If you have any concerns about your general health, you should contact your local health care provider. See our website terms and conditions for more information. Subscriber club Reader offers More Good Food. Sign in. Back to Recipes Pumpkin recipes Butternut squash See more.
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