TSH, or Thyroid Stimulating Hormone, is a key biomarker used in longevity research. It plays a crucial role in maintaining thyroid function, which in turn impacts metabolism, energy levels, and overall health. As people age, TSH levels can fluctuate, often indicating thyroid dysfunction and potential metabolic problems. Monitoring TSH levels can provide insights into an individual’s risk for age-related conditions such as cardiovascular disease, osteoporosis, and cognitive decline. By tracking TSH and addressing any imbalances through personalized interventions, individuals can better support their longevity and overall well-being.