Study Reveals Surprising Findings About Metabolism Changes Over the Lifespan

New Study Reveals Surprising Findings About Metabolism Over the Lifespan

A recent study published in Science has shed new light on the timing of age-related changes in metabolism, challenging previously held beliefs about how our bodies process energy throughout life. The study, which included data from over 6,000 subjects from 29 countries, revealed four distinct phases of energy expenditure over the lifespan.

The study found that metabolism reaches its peak much earlier in life than previously thought, with neonates in the first month of life having energy expenditures similar to that of adults. Energy expenditure then increases rapidly over the first year, reaching a peak at 0.7 years old. Surprisingly, subjects between 9 and 15 months had energy expenditures nearly 50% higher than adults.

During childhood and adolescence, total and basal energy expenditure continued to increase with age, but size-adjusted expenditures steadily declined. By age 20.5, energy expenditure reached a plateau to that of adult levels. In adulthood, energy expenditure remained stable from ages 20 to 60, regardless of sex. However, at around age 60, total energy expenditure and basal metabolic rate began to decline, with older adults over 90 showing a 26% decrease in energy expenditure compared to middle-aged adults.

The study also explored the effects of physical activity and tissue-specific metabolism on energy expenditure across different ages. The findings suggest that age-related changes in metabolism may play a more significant role in weight management than previously thought.

While individual variations in energy expenditure may affect weight trajectory, the study emphasizes the importance of maintaining a healthy lifestyle throughout life. This includes eating a balanced diet, staying active, getting enough rest, and managing stress.

These new findings challenge our understanding of metabolism and weight management, highlighting the need for further research in this area. Stay tuned for more updates on this groundbreaking study.