It became clear that we didn’t have the right idea of how body size and ageing affect metabolism.”- Herman Pontzer, Duke University
The 4 stages of metabolism
After the first year of life, however, the metabolism begins to slow down a little at a time – by about 3% every year until the age of 20. At that point, i.e. from age 20 to 60, the metabolism stabilises, and then gradually slows down by about 0.7% per year. Finally, from the age of 60 to 95, the metabolism drops by about 25%.
The research could have implications for medical practice, leading to a reassessment of the most appropriate drug doses, especially for children and the elderly