Unit
3A:
Is Attempting Weight Loss
Safe?
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Further analysis of existing data sets and
survival studies of persons losing weight voluntarily are urgently needed
because it is difficult to distinguish intentional weight loss during healthy
states from that associated with illness, psychosocial distress, or other
reasons. Still, most epidemiological studies suggest that weight loss
is associated with increased mortality even though controversy as to the
degree of risk is remains.1,2,3
-
Weight loss attempts can lead to a variety of
physical, psychological, and social risks.4
The Physical Risks of Weight
Loss
-
Weight loss may be especially dangerous for lean
individuals as they are more likely to lose a greater proportion of lean
body mass than larger persons.5
-
Low Calorie Diets and Very Low Calorie Diets are
particularly dangerous.6,7
-
Both diets may produce adverse side effects including:
| fatigue |
electrolyte imbalance |
acute gallbladder disease |
| hair loss |
low serum albumin |
gallstone formation |
| dizziness |
altered metabolism |
excessive loss of lean body mass |
| cardiac arrhythmias |
death |
|
-
The risks of these effects increase if unsafe
practices such as fasting, intake of protein liquid supplements, self-induced
vomiting, or laxatives are also employed.
-
Surgical procedures, although rising in popularity,
can also be very high risk.
-
These procedures are not supported by adequate
clinical trials as appropriate treatment for obesity.8
-
Disruption of stomach function as a result of
these procedures can adversely affect the following systems:9
| gastrointestinal |
integumentary |
skeletal |
| renal |
hepatic |
immune |
| endocrine |
nervous |
sensory |
-
Various pharmacological agents have been employed
as primary or adjunct treatment in weight loss regimens10 and
are not without risk.
-
The potential for irreversible pulmonary hypertension
secondary to Dexfenfluramine use is well documented.
-
Both Fenfluramine and Dexfenfluramine have been
removed from the market on orders from the FDA due to the increased prevalence
of valvular heart disease.
The Psychological Risks
of Weight Loss
-
Caloric restriction may be a primary independent
factor leading to significant psychological distress as evidenced by documented
symptoms including:11,12
| irritability |
food/eating obsession |
| distractibility |
compulsion to binge |
| depression |
increased emotional responsiveness |
-
Repeated failures experienced secondary to unsuccessful
weight loss attempts is also a clear psychological stressor and often results
in guilt and self-hatred.
-
Large people are likely to share common prejudices
about themselves including that they are lazy, undisciplined, and indulgent.13
-
Unsuccessful dieting may lead to more psychological
distress than not dieting at all.14
-
Eating disorders or disordered eating may develop
in susceptible individuals engaging in weight loss practices.15,16,17
-
Dieting women may be at risk for binge-eating
without vomiting and purging.18
-
Dieting leads to ignored internal cues for hunger
and satiety, inability to identify fullness, and subsequent overeating/bingeing
when voluntary dietary restriction is abandoned.19
-
Adults conflicted/troubled by eating pass along
the tendency for disordered eating to their children.20
-
Each generation has witnessed the onset of body
image disturbance and restrained eating at earlier ages.21
The Social Risks of Weight
Loss
-
While it is true that the mean BMI for Americans
is rising, the standard by which individuals consider themselves too heavy
is steadily decreasing.
-
45% of Americans considered themselves over weight
in 1990.22
-
The percentage of individuals who considered themselves
under weight, but were still trying to lose weight more than quadrupled
between 1985-1990.
-
In educational institutions across America, average
weight girls, and to a lesser extent boys, believe they are obese and disgusting23
and spend considerable time worrying about and attempting to change their
bodies that would be better spent on educational, familial, and social
activities.
-
In America, fat people are taught to feel guilty
and blame themselves for the failures of weight loss programs, and to expect
and accept rejection, mistreatment and discrimination regarding their weight.24,25
-
Individuals suffering from the emotional and physical
damage of restrained eating, weight cycling, and/or the stress of being
larger than ideal within a fat phobic culture may experience decreased
individual productivity.
-
The financial commitment to weight loss is alarming.
-
30-50 billion dollars is invested in the weight
loss industry annually diverting a huge portion of this country's gross
national product.
-
Since 95% of all weight loss attempts fail, the
diet industry appears to be a very shaky investment.
References
Back to Unit 3 A: The
Failures of The Old Paradigm
©
Fall 2001