A recent study by Stanford University has revealed that youth, from a protein perspective, ends around the age of 34.
This finding indicates that, from this age, we begin to undergo significant cellular changes that mark the onset of adulthood.
The study shows that, after the age of 34, the human body produces less protein, leading to a decrease in muscle mass and an increased susceptibility to various diseases.
This phenomenon highlights that ageing does not occur suddenly, but is a gradual process that begins to accelerate later on.
In addition to the biological changes revealed by the study, factors such as lifestyle, diet and exercise also play a crucial role in the ageing process.
The Stanford research underscores that, although biology imposes certain limitations, our habits and choices can influence how we experience ageing.
What WHO says about youth
The recent Stanford study, which indicates that protein youth ends around age 34, has generated much debate about ageing.
However, it is important to also consider other research that offers different perspectives on the ageing process.
The World Health Organization (WHO), for example, defines the onset of old age at around 74 years. This suggests that the perception of youth and ageing is complex and varies among sources.
Some studies suggest that cellular ageing can be observed from the age of 50 onwards by biological markers such as telomere length.
An important study in this area is Lopez-Otin et al. (2013), ‘The Hallmarks of Ageing‘, published in Cell, which discusses how cellular and molecular changes contribute to ageing.