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Several countries have banned the use of konjac because of the high incidence of bowel or throat obstruction. Children and pregnant or breastfeeding people should not take konjac supplements. Sood N, et al. (2008). Effect of glucomannan on plasma lipid and glucose concentrations, body weight, and blood pressure: Systematic review and meta-analysis. Konjac supplements are available online or in most natural health stores. The Food and Drug Administration (FDA) regulates dietary supplements under a different set of regulations than those covering “conventional” foods and drug products. Under the Dietary Supplement Health and Education Act of 1994 (DSHEA), a firm is responsible for determining that the dietary supplements it manufactures or distributes are safe and that any claims made about them are supported by adequate evidence to show that they’re not false or misleading. According to the FDA, some konjac candies have caused choking deaths in older adults and children. This prompted the FDA to issue an import alert for konjac candies.
A later study found that konjac lowered LDL cholesterol and recommended its use to reduce the risk of cardiovascular disease. Konjac and skin healthSoluble fiber helps lower cholesterol and blood glucose levels. A diet high in fiber may also help regulate bowel movements, prevent hemorrhoids, and help prevent diverticular disease. Keithley JK, et al. (2013). Safety and efficacy of glucomannan for weight loss in overweight and moderately obese adults. Bateni E, et al. (2013). The use of konjac glucomannan hydrolysates (GMH) to improve the health of the skin and reduce acne vulgaris. Konjac candies have a gelatinous structure that doesn’t dissolve in your mouth like other gelatin products. Take konjac with plenty of water, preferably before a meal. There’s no approved, standardized dose of konjac. Recommended dosages vary by manufacturer and what you’re using the konjac for.
Ho HVT, et al. (2017). A systematic review and meta-analysis of randomized controlled trials of the effect of konjac glucomannan, a viscous soluble fiber, on LDL cholesterol and the new lipid targets non-HDL cholesterol and apolipoprotein B. Glucomannan is generally well-tolerated. However, as with any high fiber product, it may cause digestive problems, such as:Konjac is a perennial tuber, mainly cultivated in various parts of Asia. It is rich in fiber, low in calories, and is an ideal choice for a healthy diet. Konjac has a unique texture, similar to jelly, which makes it widely used in various foods. Onakpoya I, et al. (2014). The efficacy of glucomannan supplementation in overweight and obesity: A systematic review and meta-analysis of randomized clinical trials.