When the kidneys become inflamed or injured, the consequences can be significant.
One condition involving inflammation of the kidney's filtering structures is glomerulonephritis. Another is interstitial nephritis, which involves inflammation of the tissue surrounding the kidney tubules.
These conditions can have very different causes.
Some cases are associated with medications, including certain antibiotics, pain relievers, and other drugs. Infections can also contribute to kidney problems. Autoimmune diseases may cause the immune system to attack kidney tissue. Other causes include urinary tract problems, kidney stones, metabolic conditions, and severe dehydration.
Warning signs can include:
- Swelling around the eyes or ankles
- Foamy urine
- Blood in the urine
- Significant changes in urination
- Persistent fatigue
- Nausea
- High blood pressure
- Pain in the side or lower back
- Unexplained changes in kidney function tests
Importantly, kidney disease can sometimes develop with few or no obvious symptoms during its early stages.
That is why laboratory testing matters.
Doctors may evaluate kidney function using blood tests such as serum creatinine and estimated glomerular filtration rate (eGFR). Urine testing can also detect blood, protein, or other abnormalities.
So if a person develops abnormal kidney tests after changing their diet, the correct response is not panic—it is proper medical evaluation.
Chapter 4: Why “Natural” Does Not Always Mean Risk-Free
One of the biggest problems with health trends online is the idea that natural substances are automatically safe.