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Dangerous side-effects for rasing metabolism
-In America, some over-the-counter weight loss supplements contain thyroid extract from animals, or other substances that (supposedly) act like human t
hyroid hormones to speed up metabolism.
-Reported side-effects of these products include:
- Nervousness and tremors
- Bulging eyes
- Racing heart beat
- Diarrhea
- Excessive
sweating
- And worse!
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How does Human Metabolism Work?- Thermic Effect of Food (TEF)
-The body uses energy to digest and absorb the nutrients present in the food we eat. The rate of energy used for the TEF is about 10%,
it can be increased depending on the composition of each meal.
-The TEF causes much confusion when dieters calculate calories in and out. For example;
-If we overeat the TEF actually increases
due to more food to digest, the stomach and intestines have to work harder and longer. It means if we ate an extra 3500 calories ( number of calories per pound of fat ) we wouldn't actually gain 1 pou
nd of body fat because the TEF has to be accounted for, we would gain less.
-The opposite also happens if we cut 3500 calories to lose 1 pound. The TEF decreases because there would be less food/n
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Factors that affect speed of metabolism
-BODY SIZE:
-WEIGHT GAIN
-BODY COMPOSITION:
-SEX:
-AGE
-DRUGS
-HEREDITARY
-HORMONES
-PSYCHOLOGICAL STATE
-TEMPERATURE
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Basal Metabolic Rate (BMR)
-In order to compare one person's metabolism with another's, scientists have devised a new buzz word - basal metabolic rate (BMR). Your BMR is the rate at which you use u
p energy when at rest - e.g. when you are sleeping or just lying in bed. You might call it your tick over speed.
- The more you weigh the higher your BMR will be. The metabolic rate of very fat wom
en is 25% higher than that of thin women.
- BMR is much greater in childhood than in adulthood. After the age of about 20, it drops about 2 per cent, per decade.
- People whose bodies contai
n a higher proportion of muscle to fat, tend to have a higher BMR than those with lower muscular proportions - all other things being equal.
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Speed Up Metabolism
-Increasing the speed of our metabolism is probably one of the easiest ways to lose weight naturally.
-Speeding up the metabolism creates some benefits that will maintain we
ight loss progress.
-less exercise would be needed - giving you more time
-less effort if you do exercise
-less chance of weight regain after dieting
-still enjoy some favorite foods
-l
ess time spent preparing healthy low fat meals
-save money from not buying all the expensive low fat varieties
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Effective fat loss cannot occur when the metabolism is low!
-Its a physiological fact that when losing weight we also lose protein from muscle. The faster the weight loss the more protein is used f
or energy and/or protein synthesis and a net loss of protein will always decrease the metabolism.
-As protein is lost from cells it gradually lowers the total lean body weight, this affects the bo
dy composition and lowers the metabolism. As this occurs it means we gradually require less calories to maintain weight so if the present diet is continued results will eventually stop, its even possi
ble to slowly GAIN back weight that was previously lost!
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