Summer Bankshealth and body
July 13th 2006 01:37
Working of Fat Cells :
A little more than half of the adults in the United States are overweight. Statistics show that an incredible 65.2 percent of the U.S. population is considered to be "overweight" or "obese." According to the Centers for Disease Control and Prevention (CDC), obesity and overweight status is determined in adults by finding a person's "Body Mass Index" or BMI.
BMI is a calculation that takes into consideration both a person's body weight and height to determine whether they are underweight, overweight, or at a healthy weight. For an adult to be considered "overweight," he has a BMI somewhere between 25 and 29.9. For an adult to be considered "obese," he has a BMI of at least 30. This measurement is used because it's typically a good indicator of body fat.
Whether due to concern for related health risks (high blood pressure, heart disease, diabetes, sleep apnea, respiratory problems, etc.), or just for sheer aesthetics, many Americans worry about fat. In fact, at this very moment, thousands of Americans are exercising or dieting to reduce their amount of body fat
Fat, or adipose tissue, is found in several places in the human body. Generally, fat is found underneath your skin (subcutaneous fat). There's also some on top of each of your kidneys. Other locations depend upon whether you are a man or woman:
An adult man tends to carry body fat in his chest, abdomen and buttocks, producing an "apple" shape.
An adult woman tends to carry fat in her breasts, hips, waist and buttocks, creating a "pear" shape.
The difference in fat location comes from the sex hormones estrogen and testosterone.
The human body contains two types of fat tissue:
White fat - important in energy metabolism, heat insulation and mechanical cushioning.
Brown fat - found mostly in newborn babies, between the shoulders; important for thermogenesis (making heat).
Fat tissue is made up of fat cells. Fat cells are a unique type of cell. You can think of a fat cell as a tiny plastic bag that holds a drop of fat:
White fat cells are large cells that have very little cytoplasm, only 15 percent cell volume, a small nucleus and one large fat droplet that makes up 85 percent of cell volume.
brown fat cells are somewhat smaller, are loaded with mitochondria and are composed of several smaller fat droplets. The mitochondria are able to generate heat
A little more than half of the adults in the United States are overweight. Statistics show that an incredible 65.2 percent of the U.S. population is considered to be "overweight" or "obese." According to the Centers for Disease Control and Prevention (CDC), obesity and overweight status is determined in adults by finding a person's "Body Mass Index" or BMI.
BMI is a calculation that takes into consideration both a person's body weight and height to determine whether they are underweight, overweight, or at a healthy weight. For an adult to be considered "overweight," he has a BMI somewhere between 25 and 29.9. For an adult to be considered "obese," he has a BMI of at least 30. This measurement is used because it's typically a good indicator of body fat.
Whether due to concern for related health risks (high blood pressure, heart disease, diabetes, sleep apnea, respiratory problems, etc.), or just for sheer aesthetics, many Americans worry about fat. In fact, at this very moment, thousands of Americans are exercising or dieting to reduce their amount of body fat
Fat, or adipose tissue, is found in several places in the human body. Generally, fat is found underneath your skin (subcutaneous fat). There's also some on top of each of your kidneys. Other locations depend upon whether you are a man or woman:
An adult man tends to carry body fat in his chest, abdomen and buttocks, producing an "apple" shape.
An adult woman tends to carry fat in her breasts, hips, waist and buttocks, creating a "pear" shape.
The difference in fat location comes from the sex hormones estrogen and testosterone.
The human body contains two types of fat tissue:
White fat - important in energy metabolism, heat insulation and mechanical cushioning.
Fat tissue is made up of fat cells. Fat cells are a unique type of cell. You can think of a fat cell as a tiny plastic bag that holds a drop of fat:
White fat cells are large cells that have very little cytoplasm, only 15 percent cell volume, a small nucleus and one large fat droplet that makes up 85 percent of cell volume.
brown fat cells are somewhat smaller, are loaded with mitochondria and are composed of several smaller fat droplets. The mitochondria are able to generate heat
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