Abundant

Repetitive

Persistent

Hard to dispel

This is not an isolated episode, but a recurring phenomenon.

Proteinuria: More than a sign, an early warning

The presence of protein in the urine, known as proteinuria, isn't a disease in itself. It's evidence that something is damaging the kidney structure. It can be compared to a fine sieve that begins to crack: what it's supposed to hold starts to leak out.

What's worrying is not just the existence of proteinuria, but also its prevalence, especially in people with risk factors. In people with high blood pressure, up to one in three may experience some protein loss in the urine. In people with diabetes, between 30% and 40% will develop kidney damage over the course of their lives.

Furthermore, in people with obesity, metabolic disorders, or over 50 years of age, the prevalence increases silently.

The main problem: it doesn't hurt and gives no warning.

Initial kidney damage doesn't cause pain or obvious symptoms. This is why many people only discover it when the disease is already advanced. Proteinuria is just the tip of the iceberg: the real damage may progress without the patient realizing it.

This often happens because these signs are not always actively looked for during routine medical check-ups and because the body does not send a clear alarm in the early stages.

Who should pay particular attention?

Some people shouldn't wait until they notice foam in their urine to take action. The risk is higher if:

Having high blood pressure

Having diabetes

Have a history of kidney disease

They have had autoimmune diseases

Frequently use anti-inflammatory drugs (such as ibuprofen, naproxen, or diclofenac)

Suffering from obesity or metabolic syndrome

In these cases, protein loss can begin long before visible symptoms appear.

The relationship between high blood pressure and kidney damage

High blood pressure puts constant pressure on the kidneys. This elevated pressure affects the delicate renal filtration system day after day. Initially, the kidneys resist. Over time, this prolonged pressure deforms the internal filters, known as glomeruli.

When the glomerulus is damaged, it loses its ability to filter properly. It becomes more permeable and allows protein to leak out, which not only indicates damage but also accelerates its progression. This creates a vicious cycle: more damage, greater protein loss, and further kidney deterioration.

How to spot the problem early

Proteinuria can be detected before the damage becomes severe. Simple and accessible tests allow for early identification, such as:

urine analysis

Albumin/creatinine ratio

Quantification of proteins in urine

Kidney function tests

Microalbuminuria is an early sign, comparable to smoke before a fire. It's the ideal time to intervene and prevent the damage from worsening.

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