Dietary Changes May Slow Aging Process, Study Indicates

Researchers at the University of Sydney have discovered that altering one’s diet, even at an advanced age, could potentially slow the aging process within a month. This study involved 104 participants aged between 65 and 75, who were divided into four distinct diet plans. Two of these diets were omnivorous, including both animal and plant-based proteins, while the other two consisted of 70% plant protein sources.

One omnivorous diet was high in fat, and the other focused on carbohydrates. Similarly, the two semi-vegetarian diets were categorized the same way. Each of these diets contained 14% of energy derived from protein.

“Biological age” refers to how old the body appears based on health indicators, or biomarkers, rather than the actual age in years.

The researchers measured 20 different biomarkers such as cholesterol and insulin levels to assess the impact of diet on biological aging. After four weeks, they reported notable effects on the biological ages of the participants.

The study highlighted that while chronological aging occurs uniformly, biological aging varies among individuals due to differences in health status and the body’s ability to recover. According to the findings, biomarker profiles may be a more accurate indicator of overall health and potential longevity than chronological age.

Participants consuming diets rich in complex carbohydrates and plant-based foods saw a reduction in their biological age. However, those on the high-fat omnivorous diet did not experience any significant changes in their biological age.

The study, titled “Short-Term Dietary Intervention Alters Physiological Profiles Relevant to Ageing,” was published in Aging Cell. It concluded that the most significant improvements were observed in those following diets rich in complex carbohydrates and plant-based components.

The research team noted these findings as preliminary, suggesting these outcomes might only reflect short-term changes. Caitlin Andrews, who led the research, emphasized that while the results are promising, further investigation is necessary to determine if specific dietary adjustments can extend life expectancy.