Slow vs fast metabolism

Health & Fitness
21 Jun 2026 • 12:00 PM MYT
Mirhaa05
Mirhaa05

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The process by which the body converts food and liquids into energy necessary for operation and maintaining equilibrium is known as metabolism. It includes chemical reactions that facilitate movement, breathing, and healing. The thermic effect of food (energy for digestion), basal metabolic rate (energy for basic functions), and energy required during physical activity are all included in the metabolic rate, which is often conceptualized in terms of calorie burning. Beyond controlling weight, metabolism plays a role in health by continuously operating and adapting to various conditions, such as fasting or physical activity. It consists of two primary processes: anabolism, which creates larger structures from smaller ones and is essential for growth and repair, and catabolism, which breaks down macronutrients into simpler forms for energy. https://my.clevelandclinic.org/health/body/21893-metabolism

According to the study, Piaggi P. (2019). Metabolic Determinants of Weight Gain in Humans. Obesity (Silver Spring, Md.), 27(5), 691–699. People's metabolisms react differently to fasting and overeating, and these variations have an impact on their likelihood of gaining weight. People who have a "thrifty" metabolism are more adept at conserving energy, exhibiting a greater decrease in energy expenditure during fasting and a smaller rise after overeating. As a result, they are more likely to gain weight over time and less likely to lose weight during calorie restriction. On the other hand, "spendthrift" people are more resistant to gaining weight since they burn more energy during both fasting and overeating. The study also discovered that a lower capacity to increase fat oxidation during overeating and a weaker increase in the hormone FGF21 following low-protein overfeeding were linked to higher future weight gain, indicating that metabolic phenotype plays a significant role in determining susceptibility to overweight and obesity.

The process by which the body transforms food and liquids into energy necessary for operation and equilibrium maintenance is known as metabolism. It includes chemical reactions that facilitate movement, breathing, and healing. The thermic effect of food (energy for digestion), basal metabolic rate (energy for basic functions), and energy required during physical activity are all included in the metabolic rate, which is frequently conceived of in terms of calorie burning. Beyond only controlling weight, metabolism plays a critical role in general health by continuously operating and adapting to various conditions such as fasting or physical activity. It consists of two primary processes: anabolism, which creates larger structures from smaller ones and is essential for growth and repair, and catabolism, which breaks down macronutrients into simpler forms for energy. https://www.webmd.com/fitness-exercise/what-is-metabolism


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