The Misunderstood "Magnesium Stearate"
The name "magnesium stearate " appears on many health supplement labels, causing concern among many who worry about its potential harm. Dr. Berger points out that magnesium stearate is actually a "leveling agent," primarily used to facilitate the flow of powder during capsule or pill manufacturing and to help nutrients be released and absorbed more evenly in the digestive system.
Magnesium stearate is composed of magnesium and stearic acid. Magnesium can promote relaxation, help with sleep and energy production, while stearic acid is a natural fatty acid that is widely found in vegetable oils, animal fats and cocoa.
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The safe intake is much higher than the actual usage.
According to a report from the U.S. National Institutes of Health, the safe daily intake of magnesium stearate is up to 2,500 milligrams per kilogram of body weight. For a person weighing approximately 68 kilograms ( 150 pounds), this equates to 170,000 milligrams per day . However, a single capsule contains only about 4 to 8 milligrams, far below any safe upper limit.
Taking a typical diet as an example, women consume an average of about 5,700 milligrams of stearic acid per day from food , while men consume as much as 8,800 milligrams — all from normal foods such as chocolate, nuts, and vegetable oils. In comparison, the amount found in health supplements is negligible.
Panic caused by misleading research
Some online sources claim that magnesium stearate suppresses immune cells ( T cells), but Dr. Berger explains that the study actually used a genetically modified mouse model that was unable to metabolize stearate. When researchers force-fed high doses of stearate, the mice showed a decrease in T cells, but this phenomenon cannot be applied to humans.
The human body possesses enzymes that break down stearic acid, easily metabolizing it and converting it into energy or cell membrane components. Therefore, normal intake of trace amounts of magnesium stearate from health supplements will not cause any toxic reactions.
The gap between laboratory data and reality
Dr. Berg points out that many claims about the harmfulness of magnesium stearate are based on in vitro experiments , which involve observing cell responses in petri dishes rather than real human studies. In reality, these experiments use dosages far exceeding what humans could possibly ingest, equivalent to forcing mice to swallow doses unimaginable to humans.
In real life, humans have an excellent ability to metabolize magnesium stearate, and its side effects are almost negligible.
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Take a rational view of supplement ingredients
Dr. Berger concluded that magnesium stearate is a safe, food-grade additive; it is not only non-toxic but also helps improve the stability and absorption efficiency of supplements. He reminded everyone that before believing online rumors, they should understand the research background and dosage differences to make the right judgment.
He emphasized: "Fear often stems from misunderstanding. True health comes from knowledge, not panic."
YouTube source: https://www.youtube.com/watch?v=x487WepaQR4&list=PLlWQQPXW0GbzIXpSEiG6EUMK0r-iyAYJ8
YouTube Column: Dr. Berger's Chinese Health Knowledge
