Your boyfriend's breath could smell like fish due to a serious kidney problem, specifically end-stage renal disease (ESRD).
Potential Cause: Kidney Failure
According to the provided reference, a "fishy" breath odor can be a sign that the kidneys are not functioning properly.
- Kidney Function: Healthy kidneys filter waste products from the blood.
- Kidney Failure (ESRD): When kidneys fail, these waste products accumulate in the body.
- Fishy Breath: The buildup of waste can cause a distinctive fishy odor on the breath.
What is End-Stage Renal Disease (ESRD)?
ESRD is the final stage of chronic kidney disease, where the kidneys can no longer effectively filter waste and excess fluids from the blood. When waste builds up in the body, it can lead to various symptoms, including the distinctive "fishy" breath.
What to Do:
If you suspect your boyfriend has kidney problems based on the fishy odor of his breath, he should see a doctor immediately for a proper diagnosis. ESRD requires treatment such as dialysis or a kidney transplant. It's crucial not to self-diagnose and to seek professional medical advice.
