Sodium carboxymethyl cellulose (CMC) is a commonly used food additive, thickener, and emulsifier. It is also used in other industries, including pharmaceuticals, cosmetics, and textiles.
In general, CMC is considered safe for consumption and use in these industries. The U.S. Food and Drug Administration (FDA) has approved the use of CMC in food products, and it is classified as generally recognized as safe (GRAS). The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has also evaluated CMC and concluded that it is safe for use in food.
However, some individuals may be sensitive or allergic to CMC, and may experience adverse reactions such as gastrointestinal upset, skin irritation, or respiratory problems. Additionally, high doses of CMC may cause digestive issues such as bloating or diarrhea.
Overall, for the general population, CMC is considered safe for consumption and use in appropriate amounts. However, individuals with known sensitivities or allergies to CMC should avoid products containing this additive. As with any food additive or ingredient, it is always best to consult with a healthcare professional if you have concerns about its safety or effects on your health.