A very interesting article on metabolism on whether or not people have a slow metabolism.
A few sections that stood out:
"On average, a woman’s resting metabolic rate is ~3% lower than a man’s of the same height and weight. This is mostly due to men having more lean body mass and less fat at any given body weight.
The menstrual cycle also affects RMR. Women can see a 5-10% increase in their resting metabolic rate during the luteal phase."
"Your brain, heart, liver, kidneys, and residual mass (skin, intestines, bones, and lungs) all fall under the fat-free mass umbrella and contribute to your resting metabolic rate.
In fact, your organs use more energy than your muscles do."
"The heavier you are, the higher your resting metabolic rate. There are variations in metabolic rate between people of the same age, sex, body size and body composition but these are very small and certainly not enough to justify a ‘slow’ metabolism."
"One study quantified the under-reporting between normal-weight and individuals with obesity and found normal-weight individuals under-reported by ~150 kcal/d while individuals with obesity under-reported by almost 600 kcal/d."
"And in a now-famous 1992 study, researchers investigated energy intake in self-proclaimed ‘diet-resistant’ individuals who failed to lose weight despite claiming to eat fewer than ~1200 kcal per day using doubly-labelled water.
The subjects were tested before the study to ensure there were no metabolic abnormalities. None of the subjects’ RMR was more than 10.4% below the predicted values.
The mean self-reported intake was ~1028 calories but the groups actual mean intake was ~2081 calories per day. The participants underreported their energy intake by ~47%"
http://physiqonomics.com/slow-metabolism/?fbclid=IwAR2ASX1MotEyQG_d2Wm_ejE8OwlIXPPdUmKHxIGyDnCCPaXAPgmVO5NY1mA
