The vital needs theory starts from the assumption that life originates at the quantum level of matter, but when it grows into the macroscopic level it conflicts with the law of entropy that leads to the destruction of any form of organization. Living systems would be in a constant state of struggle with the law of entropy and, in order to survive, several conditions must be met, for example material conditions such as drinking, food, shelter, and intangible conditions such as the need for meaning and the need for cohesion and love. These conditions are vital, since when they are not met the living system dies.
When a vital need is met only partially an alarm bell is triggered. For example, when the need for water is unsatisfied thirst is felt and when the need for food is unfulfilled hunger is felt. The same applies for intangible needs, for example, depression is the alarm bell which has the function to inform that the vital need for meaning is not met and anguish and anxiety are the alarm bells which tell that the vital need for cohesion and love is unsatisfied.
The vital needs theory identifies a series of principles which help in the development of effective and efficient solutions to anxiety and depression and which can increase wellbeing and at the same time reduce costs.