The American College of Sports Medicine (ACSM), the Centers for Disease Control and Prevention (CDC), and the Surgeon General have all issued statements that recommend placing an emphasis on adopting physical activity into one’s lifestyle. Their intention is to make the public more aware of the health benefits associated with increased physical activity, as well as to highlight the amount and intensity of activity necessary to achieve optimal benefits.
More than 28 percent of Americans are completely sedentary (they engage in no physical activity), with an additional 60 percent being inadequately active (engaging in less than 30 minutes of activity per day). For those who strive to achieve and maintain a high quality of health, it must be recognized that physical activity is vital to optimal health. This is reaffirmed by numerous studies that have found an association between physical activity, health, longevity, and an improved quality of life. In addition, the number of deaths related to sedentary living or obesity is approximately a half million per year. Physical activity may impact quality of life in several ways: it can be used to improve self-image and self-esteem, physical wellness, and health.
Nutrition during the preconception period, as well as throughout a pregnancy, has a major impact on pregnancy outcome. Among pre-pregnancy considerations, the pre-pregnancy Body Mass Index (BMI), folic acid status, and socioeconomic status are the most important.
Obesity, defined as a body mass index of 30 or greater, is an epidemic in the United States and other industrialized nations, and it is rapidly becoming one in developing nations. As countries transition to westernized lifestyles, obesity tends to increase. Obesity rates vary from as little as 2 percent in some Asian countries to as much as 75 percent in some Pacific nations. There are more than 300 million obese persons in the world, and more than 750 million overweight persons. In the United States, 34 percent of adults are overweight and 30.5 percent are obese. Between 1980 and 2000, the percentage of overweight children aged six to eleven doubled, from 7 percent to 15 percent, and the percentage of overweight adolescents ages twelve to nineteen tripled, from 5 percent to 16 percent. In Europe, the thinnest country is Sweden, with about 10 percent obesity, while the fattest is Lithuania, with about 79 percent obesity. The sad fact is the prevalence of obesity appears to be increasing in all countries.
Definition
Impotence, also known as erectile dysfunction, is the inability to achieve or maintain an erection long enough to engage in sexual intercourse.







