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Microsoft word - caffeines negative affect on weight loss.doc
Caffeine’s affect on weight loss
Obesity is a wide-spread and increasing public health problem. Obesity is associated with negative health impact and elevated mortality. The lethal effects of extreme obesity on a good quality of life and psychosocial functioning have been well researched.
Diabetes, heart disease, sleep problems, too much fat in your blood, intestinal disease, low self worth, depression are just some of the big problems with being obese. While there are many reasons for obesity, we’ll look at one area that many folks might not understand.
Research has found that caffeine and coffee negatively affects many of these health conditions that are prevalent in overweight people. Additionally, both caffeine and coffee contribute to increased appetite that thwarts the efforts of people on diets to stick to their regime. Since caffeine is a stimulant, it is thought that it enhances fat metabolism and encourages weight loss. Many people believe their daily mug of coffee or other caffeinated drink helps them to lose weight or keep weight off. However, the diuretic effect of caffeine is what appears to create weight loss, and this causes loss of water, not fat.
Caffeine in coffee elevates the stress hormones
cortisol, epinephrine (also known as adrenaline)
and norepinephrine. These hormones are responsible for increased heart rate and blood pressure,
and a sense of "emergency alert". Circulation of oxygen to the brain and extremities is decreased
and the immune system is suppressed. Increased cortisol levels lead to abdominal obesity
Chronically elevated blood cortisol levels that are caused by frequent stress or regular caffeine or
coffee intake lead to an increased buildup of fat in the abdominal area. Increased stress leads to
. Elevation of stress hormones leads to fat cravings.
Additionally, caffeine stimulates your appetite.
Although caffeine is included as an ingredient in
many weight-loss aids, it actually stimulates appetite, and organizations including the Mayo Clinic
discourage the use of caffeine as a weight-loss aid. Caffeine triggers hypoglycemia through the
activation of the sympathetic nervous system and the adrenal glands, causing an immediate and
sustained constriction of blood vessels, decreased circulation to the brain and a heightened feeling
of low blood sugar. The body’s reaction to hypoglycemia results in food cravings and increased
appetite. People often crave higher fat foods resulting in increased caloric intake, further interfering
with the body’s ability to maintain a healthy weight.
Finally, caffeine interferes with GABA metabolism
. GABA (Gamma-aminobutyric acid) is a
neurotransmitter naturally produced in the brain and nervous system as well as the heart. It plays an
important role in mood and stress management and influences a person’s sense of well-being.
Caffeine has been found to interfere with binding of GABA to GABA receptors, preventing it from
performing its calming function. GABA’s role in stress management is compromised in the
presence of caffeine, and increased physiological and psychological stress lead to overeating as well
as difficulties losing weight.
Individuals who are trying to lose weight would do well to pass on the coffee. --David Charleston
ASSEMBLEIA MUNICIPAL DE VALENÇA – SESSÃO ORDINÁRIA DE 29 DE ABRIL DE 2010 ACTA Nº 06 Aos vinte e nove dias dias do mês de Abril do ano de dois mil e dez , pelas 14h.50m, teve lugar, no Auditório Dr. Jorge Gama , nos Paços do Concelho , Sessão Ordinária da Assembleia Municipal de Valença, de cuja convocatória, datada do dia quinze do mesmo mês, constavam da Ordem de T
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