Sourced from Livestrong by Andrea Boldt, medically reviewed by Kay Peck, RD, MPH

What Causes Body Odor (and Which Supplements Help?)

Body odor is a complex phenomenon influenced by various factors such as sweat production, hygiene practices, and individual genetics. While it is true that everyone has a unique odor that can fluctuate based on factors like sweat, environment, and bathing habits, certain instances of constant or unpleasant body odor may lead individuals to seek out supplements to help address the issue.

According to a May 2014 study published by Experimental Dermatology, body odor is largely determined by genetic factors. This means that good hygiene practices alone may not always completely control body odor, making the claims of supplements that promise to magically alter one's body scent appear too good to be true.

However, it is important to note that some supplements can indirectly influence body odor. In cases where body odor is a symptom of an underlying condition or nutrient deficiency, certain vitamins and minerals may help alleviate the issue. It is crucial to understand that the primary cause of body odor is not typically related to nutrient deficiencies, but in specific instances where it is, supplements may provide some relief.

Supplements for body odor

ZINC
Although not specifically marketed as a supplement for body odor, has been found to be effective in reducing foul-smelling sweat. Research published in the Journal of Cosmetics, Dermatological Sciences and Applications in September 2013 discovered that applying a 15-percent zinc sulfate solution to the soles and toe webs of individuals with a disorder causing foul-smelling sweat resulted in a significant reduction in foot odor. Zinc is also a common ingredient in deodorants due to its antimicrobial properties that combat odor-producing bacteria.
VITAMIN C
Vitamin C deficiency can lead to a condition called scurvy, which is associated with putrid-smelling sweat. Increasing vitamin C intake through supplements or vitamin C-rich foods can help treat scurvy and potentially alleviate the accompanying odor, as suggested by research published in The Journal of Biochemistry.
VITAMIN B2
Trimethylaminuria is a metabolic disorder characterized by the accumulation of trimethylamine, resulting in a strong fishy odor in bodily fluids such as sweat, urine, reproductive fluids, and breath. Although this condition is not caused by a deficiency in vitamin B2, supplementing with B2 and consuming foods rich in this vitamin may help alleviate the symptoms, according to the National Human Genome Research Institute.
CHLOROPHYLLIN
Chlorophyllin is a derivative of chlorophyll which has been shown to reduce certain types of body odor. Studies indicate that chlorophyllin supplements can effectively reduce fecal odor, which could contribute to overall body odor. However, it is important to note that there is limited data supporting the use of chlorophyllin for addressing body odor resulting from sweating.

It is crucial to consult a doctor before considering any supplements, as the Food and Drug Administration (FDA) does not require these products to be proven safe or effective before they are sold. Therefore, there is no guarantee that the supplements you take are safe, contain the advertised ingredients, or produce the claimed effects.

On the other hand, some supplements may actually contribute to body odor. Choline, an essential nutrient that supports cell integrity and plays a role in brain function, may increase body odor when consumed in high doses. Excessive choline, typically above the recommended daily intake, has been associated with side effects such as fishy body odor, vomiting, and increased sweating. People with trimethylaminuria may convert choline into trimethylamine, resulting again in a fishy smell which can contribute to strong body odor.

It is worth emphasizing that the most effective measures for controlling body odor do not necessarily involve supplements.

Here are some recommendations (from reputable sources U.S. National Library of Medicine and the Cleveland Clinic) to help control body odor:

Maintain regular hygiene by taking regular showers or baths.
Utilize antiperspirants or deodorants to manage sweat and odor.
Ensure that your clothes are clean and fresh.
Choose clothing made from breathable fabrics like cotton and silk to allow better air circulation.
Stay on top of your laundry routine to keep clothes and linens clean.
Reduce the consumption of spicy foods, red meat, and garlic, as these can potentially contribute to body odor.