The fishy odor your 13-year-old daughter is experiencing could be due to a condition called Trimethylaminuria (TMAU), also known as "fish odor syndrome."
Understanding Trimethylaminuria (TMAU)
TMAU is a metabolic disorder where the body can't properly break down trimethylamine (TMA). TMA is a chemical compound produced in the gut from the digestion of certain foods. Normally, an enzyme breaks down TMA, but in individuals with TMAU, this enzyme is deficient or not working correctly.
-
What is Trimethylamine? Trimethylamine is a chemical that has been described as smelling like rotten or decaying fish.
-
What Happens in TMAU? Because the body can't break down TMA, it builds up and is released in bodily fluids like sweat, urine, and breath, causing a distinct fishy odor.
Potential Causes and Contributing Factors
While TMAU is often genetic, other factors might contribute to a fishy odor.
Dietary Factors:
Certain foods can exacerbate the condition.
- Foods High in Choline: Eggs, liver, kidney, beans, peas, peanuts, soybeans, and cruciferous vegetables (broccoli, cabbage, cauliflower).
- Foods Containing Trimethylamine Oxide: Seafood.
Hygiene:
While less likely, poor hygiene can sometimes contribute to body odor. Ensure your daughter is maintaining good personal hygiene.
Hormonal Changes:
Hormonal fluctuations, especially during puberty, can sometimes affect body odor.
What to Do Next
-
Consult a Doctor: The most important step is to consult with your daughter's doctor. They can perform tests to determine if she has TMAU or if another condition is causing the odor.
-
Diagnostic Testing: The doctor may order a urine test to measure TMA levels.
-
Dietary Management: If TMAU is diagnosed, a doctor or registered dietitian can help create a dietary plan to reduce TMA production. This may involve limiting foods high in choline and trimethylamine oxide.
-
Hygiene Practices: Encourage frequent showering and the use of antibacterial soaps, although this will likely not eliminate the odor completely if TMAU is present.
-
Support and Counseling: TMAU can be emotionally challenging. Support and counseling may be helpful for your daughter.
