The discussion compares telomeres with the ends of chromosomes and mentions stress, smoking, and obesity as factors that may be related to them.
Avoid treating an unreferenced number as a medical fact
This overview does not include a quantitative estimate of how much stress affects telomeres. It does not establish that stress causes a specific rate of premature aging or illness. Health claims about telomeres should be assessed against the underlying research and the population studied.
This is general information, not medical advice or a diagnosis. Speak with a qualified healthcare professional about health concerns.