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Diet and Obesity
The human diet has changed greatly since the Paleolithic era when most food consumed was derived from animals and plants that were available locally.
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Dieting, Physical Activity, and Weight Loss
Dieting is the most common method of weight loss, often in combination with increased physical activity.
The number and v...
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Surgery and Weight Loss
Surgical methods for weight loss have been developed to treat obesity.
Lipectomy and liposuction are the simplest and oft...
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Variation in Body Size and Obesity
There are large differences in body weight and shape.
Whether someone is above body weight is determined by the measureme...
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Obesity and Disease
Societal pressure to conform to a particular body size and shape is a major reason for embarking on weight loss programs.
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Drugs and Weight Loss
Drugs to treat the “disease” of obesity are constantly being developed.
Weight loss drugs show some efficacy in contribut...
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Alternative Weight Loss Methods
There has been an increasing interest in the use of alternative, and unconventional, methods to treat obesity.
These meth...
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Body Composition: What Are We Made of?
Our body contain complex mixtures of chemical substances.
Fat is a major component making up to a third of our body weigh...
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Genetics and Obesity
Studies with twins have demonstrated that genetic factors play a critical role in the development of obesity.
Obesity can...
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Non-dietary Factors and Weight Gain
There are many factors that regulate the intake and utilization of energy from food.
Hormones such as the male and female...
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Chapter
Fluorocarbons
Fluorocarbons are a group of industrial chemicals which, because of their chemical stability, are resistant to normal degradative processes and accumulate in the environment even in areas far removed from huma...
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Do Environmental Chemicals Cause Disease and, If So, How?
We are exposed to environmental chemicals in our food, water, and the air we breathe. There is evidence that there are slight genetic differences in the detoxification and excretion mechanisms for dealing with...
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Environmental Chemicals and Our Genes
The maintenance of the chemical structure of our DNA is an important factor in the prevention of disease. We know that chemical exposure can damage the DNA structure. Some of the chemicals released into the en...
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What Can We Do?
There is really very little doubt that, with continuing globalization, and with the emergence of the two most populous countries in the world, India and China, as industrial powers with the potential to rival ...
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Environmental Chemicals and the Immune System
The immune system plays a key role in the maintenance of our health and wellbeing. However, its function may be compromised by exposure to the some of the thousands of environmental chemicals to which we are e...
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Introduction
There are many benefits to living in an industrial society but the benefits we receive do come at a price because the waste products of industry are released into the atmosphere, contributing to pollution of t...
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The Indestructibles
The chemical stability of industrial chemicals such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), and other the so-called indestructibles results in their environmental accumu...
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Noise, Chemicals, and Hearing
Certain chemicals can cause hearing loss. Continuous exposure to noise over periods of time in an occupational setting can also lead to hearing loss particularly if combined with chemical exposure. Little is r...
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E-Waste
As the use of fossil fuels for energy production and in motor vehicles is gradually replaced by wind power, solar power, and electric cars, there is a corresponding increase in a newer form of waste – e-waste ...
