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Health and Norm

*Sanitas et norma*

For medical students2 min readUpdated 2026-10-10

Health and disease are interrelated forms of vital activity. When evaluating a patient's condition, the concepts of health and norm are critical for determining the level of adaptation and optimal functioning.

Meaning of healthCapacity for biological and social adaptation.

WHO definitionA state of complete physical, mental, and social well-being.

Concept of normA state of optimal vital activity under specific environmental conditions.

RelationshipThe concept of norm is broader than the concept of health.

Biological Meaning and Definition of Health

In pathophysiology, health is viewed as a state of optimal adaptation of an individual to constantly changing external and internal environments.

According to the official WHO (World Health Organization) definition, health is not merely the absence of disease or infirmity, but a state of complete physical, mental, and social well-being.

The Essence of the 'Norm'

When diagnosing health or developing pathology, clinicians always rely on the fundamental concept of the norm.

The norm is defined as a state of optimal vital activity of the organism under specific, real conditions of existence.

Relationship Between Norm and Health

There is an important relationship between the categories of health and norm:

The concept of norm is broader than health.
The term health is often used as a direct synonym for the normal state, though certain discrepancies may exist.
A practically healthy person may differ from universally accepted standards of the norm (e.g., in body weight, height, stature, intelligence level, or personality traits).

Mnemonic

Norm is broader than health: norm encompasses any variant of optimal functioning, even with deviations from standard models.

Frequently asked questions

What is a premorbid state (predisease) and how does it relate to the norm and health?

A premorbid state (predisease) is a transitional state of the organism between health and disease, characterized as 'neither disease nor health' (the syndrome of disease formation). It is based on the overstrain of the organism's adaptive, or sanogenetic, mechanisms (sanus — healthy).

Its relation to the norm is that against the background of a premorbid state, exposure to an agent that is nonpathogenic under normal conditions can trigger a disease. This condition is observed:

after a recovered illness;
during chronic or repeated stress;
when living under extreme environmental factors.

What is health from a biological perspective?

It is the organism's capacity for full biological and social adaptation, as well as a state of optimal adaptability to a changing environment.

How does the World Health Organization define health?

WHO defines health as a state of complete physical, mental, and social well-being, rather than merely the absence of disease.

Which is broader — health or norm?

The concept of 'norm' is broader than 'health'. An individual may be healthy while displaying individual variations from accepted standard norms.

Go deeper

Homeostasis as the basis of vital activity
Pathology and its manifestations
Essence and development of disease
Variants of functional state
Concept of predisease