Taurine Might Not Play a Significant Role in Aging After All

While it was previously thought that taurine, an amino acid, diminishes with age, research in animals suggested that taurine supplements might help slow down the aging process. New studies, however, indicate this decline is not consistent. In fact, taurine levels often increase with age, indicating that low nutrient levels might not be the primary factor driving aging.

Earlier research indicated that taurine levels decrease in aging men, with those exhibiting higher taurine levels at age 60 experiencing better health outcomes. This correlation suggests low taurine levels might contribute to aging, supported by evidence that taurine supplements can extend the lifespans of mice and monkeys.

The challenge lies in the fact that taurine levels can fluctuate due to various factors, including illness, stress, and dietary habits. Thus, a reduction in this vital amino acid may not be directly linked to the aging process. Maria Emilia Fernandez and her team from The National Institute of Aging in Maryland assessed taurine levels in 742 individuals aged 26 to 100. The cohort consisted of roughly equal numbers of men and women, with no major health issues and multiple blood samples taken between January 2006 and October 2018.

On average, women aged 100 had taurine levels that were nearly 27% higher than those aged 26, while men aged 30 to 97 exhibited an approximate 6% increase. Similar trends were noted among 32 monkeys sampled at ages ranging from 7 to 32 years, where female monkeys saw taurine levels rise by an average of 72% and male monkeys by 27% between ages 5 and 30.

These results underscore that taurine levels may not be a reliable indicator of aging. Importantly, taurine concentrations vary widely among individuals and can change over time due to external factors, according to Fernandez.

Nevertheless, some individuals may still find taurine supplementation beneficial. Fernandez highlights research indicating its potential to help regulate blood glucose levels in people with type 2 diabetes or those who are obese. However, the question of whether taurine can slow aging in otherwise healthy individuals remains unanswered.

Vijay Yadav from Rutgers University and his colleagues are currently leading clinical trials on taurine supplementation in middle-aged adults. “We aim to conclude the trial by the end of 2025,” he states. “Our goal is to produce robust data to determine if taurine supplementation can decelerate human aging or enhance health and fitness.”