Chlorophyll, the pigment that gives plants their green color, has recently gained widespread attention as a liquid supplement. This compound is fundamental to photosynthesis, the process plants use to convert light into energy. The supplement’s popularity stems largely from the claim that it acts as an internal deodorizer, improving overall body scent. This marketed benefit has led many to wonder if this green liquid can alter the taste of bodily secretions.
Chlorophyll vs. Chlorophyllin: Understanding the Supplement
The supplement widely available is not natural chlorophyll, but a semi-synthetic, water-soluble derivative called chlorophyllin. Natural chlorophyll contains a central magnesium atom and a long, fat-soluble tail, making it poorly absorbed by the human body. Chlorophyllin is created by replacing the central magnesium with a copper atom and removing the fat-soluble tail. This modification produces sodium copper chlorophyllin, which is significantly more stable and absorbable in the gastrointestinal tract. Chlorophyllin is the specific compound used when studying the purported internal effects of the supplement due to this enhanced absorption.
Investigating Internal Deodorizing Claims
The idea that chlorophyllin acts as an internal deodorant is rooted in decades-old studies, mostly conducted in clinical settings. Early research focused on patients with colostomies, ileostomies, or chronic wounds, where chlorophyllin appeared to reduce fecal, urinary, and wound-related odors. The proposed mechanism is that the molecule binds to volatile organic compounds (VSCs) within the digestive system, neutralizing odor at its source. This binding action prevents the malodorous compounds from being absorbed and expelled through breath or sweat.
For general body odor and breath (halitosis), the scientific support is much less conclusive. While some older studies suggested a benefit, modern, double-blind trials for everyday cosmetic deodorizing are largely absent or have produced mixed results. The effect on breath is theorized to occur through the reduction of sulfur compounds produced by bacteria in the mouth and gut. Despite the plausible mechanism of binding to VSCs, robust evidence for significant, consistent odor reduction in otherwise healthy individuals remains limited.
The Truth About Taste Alteration
The specific claim that chlorophyllin alters the taste or flavor profile of bodily fluids—such as sweat, saliva, or other secretions—is not supported by scientific literature. Scientific investigation has focused on the compound’s ability to reduce odor, which is distinct from changing flavor. Odor reduction works by neutralizing volatile compounds perceived by the nose, which can reduce the overall unpleasantness of a scent.
Flavor is a complex sensation involving both smell and the chemical composition detected by taste receptors on the tongue. There is virtually no clinical evidence that ingested chlorophyllin is metabolized or excreted in a way that significantly changes the chemical makeup of bodily fluids to make them taste different. While reducing a foul odor might imply an improvement in associated flavor, this is an indirect effect, not a direct modification of the flavor compounds themselves. Any perceived flavor alteration is likely a result of odor reduction rather than a fundamental chemical change to the flavor profile.
Practical Considerations and Safety Profile
Chlorophyllin is generally recognized as safe for consumption, but users should be aware of potential side effects. The most common effect is the temporary discoloration of urine and feces, which can appear green or black. Gastrointestinal issues, such as mild stomach upset or loose stools, have also been reported, especially when taking higher doses.
A more serious consideration is the potential for photosensitivity, meaning the skin may become more sensitive to sunlight. Individuals taking chlorophyllin should use appropriate sun protection, as this increases the risk of sunburn or skin irritation. Since chlorophyllin is a copper-containing compound, long-term excessive intake could potentially lead to copper accumulation, though this is rare at recommended dosages. As an unregulated dietary supplement, standardized dosages vary, and use is discouraged for those who are pregnant or breastfeeding due to a lack of reliable safety data.