Glucomannan Weight Loss Side Effect Warnings You Need to Know

2012-05-08 11:46

Glucomannan has recently been televised as a safe and effective weight loss supplement that acts as a natural appetite suppressant. However, what few people are aware of is a side effect warning that taking the wrong type of glucomannan or taking glucomannan the wrong way can cause serious esophageal or intestinal damage that requires emergency surgery.

Glucomannan is a water-soluble dietary fiber derived from the root of a plant named “Amorphophallus konjac,” which grows in warm subtropical regions of Asia. It is also known by other names such as konjak, konjaku, and konnyaku potato. Due to its swelling properties, glucomannan is often used as a food additive as a thickener.

However, because of its ability to absorb water and swell many times the normal size of its dried state, glucomannan is more popularly known as a potential weight loss supplement that acts as an appetite suppressant. It suppresses appetite by essentially expanding and filling the space within the stomach to give a feeling of fullness.

Currently, only a few small studies suggest that taking glucomannan may result in significant weight loss for some dieters.

In one study 20 moderately overweight women were divided into a treatment group and a placebo group. The treatment group received 1 gram of glucomannan 3 times a day for 8 weeks while the control group took a placebo throughout the testing period. What the results showed was that the treatment group lost an average of 5.5 pounds whereas the placebo group gained an average of 1.5 pounds.

However, neither group was closely monitored regarding how much each member of their respective group consumed during the testing. Furthermore, the numbers were too small to be statistically significant. Therefore the study only suggests that taking glucomannan may lead to weight loss.

In spite of the lack of more thorough studies, what is accepted is the fact that taking glucomannan does lead to feelings of fullness and therefore may suppress appetite in some people.

Taking glucomannan typically leads to slightly uncomfortable side effects such as gas, bloating, nausea, abdominal pain and diarrhea. More serious complaints of taking glucomannan can be traced to individuals sensitive to glucomannan that experienced allergic reactions such as a rash, hives, itching, swelling of the mouth or throat, wheezing, or difficulty breathing.


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I take ur drugs. Am on a durg. Can ur durg effect me.
Pls i want ur number to call. Thank u.
Bettina - Do you have a doctor? Please see a health care specialist if you have concerns about taking this drug.
I taking glucomannan and i have rash what should i do please
I have GERD and had my symptoms under control. Since using this product (in powder form) my symptoms have returned and I now have stomach soreness also. Is this coincidence or likely to be related ?
My testes swell after ingesting gluco. What up with that.
I've tried the kojnac noodles three times now and felt super nauseous the rest of the night. Last night I was wheezing. I won't be eating these again.
i love glucomannan powder, i mix it with citrucell and chia seeds and drink it for breakfast ... and before bed.... stay away from carbs or you will get the side effects described above. It is a diabetics dream come true. weight loss aid also.