It’s not unusual to hear people blame their weight gain on a slow
metabolism.
They’ve cut down on calories and
take regular exercise yet they’re still not losing weight. The only other
possible diagnosis, they expertly conclude, is a slow metabolism.
But what is a slow metabolism? How
does it affect your weight and can you do anything to speed it up?
Metabolism: Converting Food into Energy
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People with fast metabolism are said to be blessed with inner combustion that makes you wonder where all the food goes. |
Metabolism: Converting Food into Energy
Metabolism is the process by which your body converts what you eat
and drink into energy. During this complex biochemical process, calories in
food and beverages are combined with oxygen to release the energy your body
needs to function.
Even when you're at rest, your body needs energy for all its
"hidden" functions, such as breathing, circulating blood, adjusting
hormone levels, and growing and repairing cells.
The number of calories your body uses to carry out these basic
functions is known as your basal metabolic rate (BMR) — what you might call
metabolism. Several factors determine your individual basal metabolic rate,
including:
Your Body Size and Composition. The bodies of people who are larger or have more muscle burn
more calories, even at rest.
Your Sex. Men usually have less body fat and more muscle than do women
of the same age and weight, burning more calories.
Your Age. As you get older, the amount of muscle tends to decrease and
fat accounts for more of your weight, slowing down calorie burning.
Energy needs for your body's basic functions stay fairly consistent
and aren't easily changed. Your basal metabolic rate accounts for about 70 percent
of the calories you burn every day.
In addition to your basal metabolic rate, two other factors
determine how many calories your body burns each day:
Food Processing (thermogenesis). Digesting, absorbing, transporting and storing the food you
consume also takes calories. This accounts for 100 to 800 of the calories used
each day. For the most part, your body's energy requirement to process food
stays relatively steady and isn't easily changed.
Physical activity. Physical activity and exercise — such as playing tennis,
walking to the store, chasing after the dog and any other movement — account
for the rest of the calories your body burns up each day. Physical activity is
by far the most variable of the factors that determine how many calories you
burn each day.
It may be tempting to blame your metabolism for weight gain. But
because metabolism is a natural process, your body has many mechanisms that
regulate it to meet your individual needs. Only in rare cases do you get
excessive weight gain from a medical problem that slows metabolism, such as
Cushing's syndrome or having an underactive thyroid gland (hypothyroidism).
Unfortunately, weight gain is complicated. It is likely a
combination of genetic makeup, hormonal controls, diet composition, and the
impact of environment on your lifestyle, including sleep, physical activity and
stress. All of these factors result in an imbalance in the energy equation. You
gain weight when you eat more calories than you burn — or burn fewer calories
than you eat.
While it is true that some people seem to be able to lose weight more quickly and more easily than others, everyone will lose weight when they burn up more calories than they eat. Therefore, to lose weight, you need to create an energy deficit by eating fewer calories or increasing the number of calories you burn through physical activity or both.
Hope you found this is useful.
~just because #YourBodyMatters.
To Your Health & Wellness,
AdeDolamu
BB: 21D51EFE
E: thebodymatters@flp.com