Metabolism describes the chemical processes that turn food and drink into energy, and you use this for breathing, digestion, movement, and cell repair. Some people burn energy quickly, while others burn it more slowly. Here is more information on how metabolism works and which health conditions affect it:
Current Rate of Burning Calories
Your current calorie burn reflects your total energy use across a full day. Resting functions use most of your calories, and activity and digestion account for the rest. When you walk, climb stairs, or exercise, your daily total rises. Body size and muscle mass may also change your metabolism.
Fitness trackers estimate calorie burn, but their readings often vary widely from your true total. Since trackers rely on heart rate and motion, they miss some forms of energy use. Indirect calorimetry gives a more precise measurement. This test measures the oxygen you breathe in and the carbon dioxide you exhale.
Basal Metabolic Rate
Basal metabolic rate (BMR) is the number of calories your body burns at complete rest. BMR makes up about 60-70% of daily calorie use, and several factors shape it. Muscle tissue burns more calories at rest than fat tissue. Other personal traits also play a role:
- Age
- Sex
- Height and weight
- Thyroid hormone levels
- Genetics
Your basal metabolic rate is the foundation of your energy needs, as it powers core functions like breathing, circulation, and maintaining body temperature. It varies from person to person, influenced by factors like muscle mass and genetics. While genetics may set the baseline, regular exercise and a healthy diet can positively impact your BMR, giving your body more energy efficiency over time.
Metabolic Conditions
When cells resist insulin, your pancreas releases more of it to keep blood sugar steady. This pattern may continue for years, and many people notice no symptoms. A fasting blood test helps reveal the problem.
Metabolic syndrome is not a single disease, and doctors define it as a cluster of risk factors. A diagnosis requires several specific markers. These markers include waist size, blood pressure, blood sugar, triglycerides, and HDL cholesterol. People who have this syndrome may face a higher risk of heart disease, stroke, and diabetes.
Type 2 diabetes develops when blood sugar stays above normal ranges, and it can last for long periods. An A1C result that is too high indicates diabetes or prediabetes. Insulin resistance typically comes first, while insulin production declines afterward.
Appetite-suppressing Injections and Diet
Appetite-suppressing injections mimic gut hormones that slow digestion and reduce hunger signals. Semaglutide and tirzepatide are two standard options. Results differ between people, and some patients experience nausea or other side effects. When needed, doctors may pair these medications with dietary changes like the ones below:
- Adequate protein at each meal to help preserve muscle
- Leafy vegetables, beans, and whole grains
- Smaller portions eaten at regular times
- Fewer sugary drinks and processed snacks
- Steady water intake throughout the day
Get Your Metabolism Evaluated
A metabolic evaluation looks at your energy use and screens for related conditions. Tests typically include a BMR measurement, fasting glucose, A1C, and a lipid panel. If you have questions about your metabolism, schedule an appointment with a weight loss specialist today. Medical providers can review your results with you and explain your options.
