A slight decrease in growth hormone ratio is seen with age, resulting in decreased metabolic rate.

Summary

• Metabolism refers to the countless chemical processes going on continuously inside the body that allow life and normal functioning.
• The amount of kilojoules your body burns at any given time is affected by your metabolism.
• Your metabolic rate is influenced by many factors – including age, gender, muscle-to-fat ratio, amount of physical activity and hormone function.

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