Source: TechCrunch

Source: Longevity.Technology

Source: MIT Technology Review

Why do some people appear to age faster than others, even when they are the same age? Researchers increasingly believe that chronological age tells only part of the story.

Why do some people appear to age faster than others, even when they are the same age? Researchers increasingly believe that chronological age tells only part of the story.

Ever wondered what your true biological age is? This quick easy test will give you the answer and show you how to improve your longevity.

A recent study conducted by researchers at the University of Sydney has revealed that older adults aged 65 to 75 can experience a reduction in biological age markers after just four weeks of dietary changes. The study, published in Aging Cell, examined the effects of different dietary patterns on aging-related biomarkers. Participants were randomly assigned to one of four dietary groups: omnivorous high-fat (OHF), omnivorous high-carbohydrate (OHC), semi-vegetarian high-fat (VHF), or semi-vegetarian high-carbohydrate (VHC). Each diet provided 14 percent of total energy from protein, with variations in fat and carbohydrate intake. The results showed that the omnivorous high-fat group experienced no meaningful change in biological age markers, while the other three groups demonstrated reductions in their calculated biological age. The strongest evidence was observed in the omnivorous high-carbohydrate group, which consumed a diet with 14% protein, 28-29% fat, and 53% carbohydrates. Biological age is an estimate of how old the body appears based on health and physiological condition, rather than chronological age. The researchers emphasized that these findings are preliminary and that longer studies are needed to determine if the changes persist, translate into lower risk of age-related diseases, or apply to different populations. Associate Professor Alistair Senior, who supervised the research, noted that "longer term dietary changes are needed to assess whether dietary changes alter the risk of age-related diseases." Dr. Caitlin Andrews, lead author of the study, stated that "this research offers an early indication of the potential benefits of dietary changes later in life" but cautioned that it's too soon to definitively claim that specific dietary changes will extend lifespan. The study analyzed 20 different biomarkers, including blood levels of cholesterol, insulin, and C-reactive protein, to calculate biological age scores for participants in the Nutrition for Healthy Living study conducted at the University's Charles Perkins Centre. The findings suggest that reducing dietary fat, animal-based protein, or both may influence aging-related biomarkers in older adults over a relatively short period. However, the researchers stress that a lower calculated biological age does not necessarily mean the aging process itself has been permanently reversed. Future research should explore whether these findings extend to other cohorts and whether the changes recorded are sustained or predictive of long-term outcomes. The study does not claim that dietary changes will directly extend lifespan but provides early evidence that diet may play a role in influencing aging-related health markers in older adults.

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