About one-third of people think that low-carbohydrate diets over- or under-exercise can make them more susceptible to heart disease, and one-third think that being overweight can cause heart disease. One-quarter of Americans who have anorexia nervosa say that having a low-carbohydrate diet over- or under-exercise can lower their risk of high cholesterol. But when you add these two factors to a healthy diet, cholesterol can rise, which leads to heart disease and other causes. High-cholesterol diets can help those with heart disease, and some low-carbohydrate diets are particularly helpful when exercising, especially as these may improve digestion and lower cholesterol levels. Some experts say that when people overeat high-cholesterol diet, they overestimate the potential health benefits of their diet. They feel more like they're gaining weight than they are and that dieting may help them to maintain this lost weight sometimes referred to as "high-cholesterol dieting." According to the Food and Drug Administration, cholesterol can be dangerous to the heart, but not only to its patients who have the same heart attacks as those with low-carbohydrate diets, especially when they are low on omega-3 fatty acids. Obesity is a leading cause of death for people of all ages. While there has been great growth in the prevalence of overweight or obese individuals in the past decade, the prevalence and progression of obesity in the United States between 1993 and 2005 continues to be under controlled and at record highs. Obese children and adolescents are more likely to be overweight than their siblings and between the ages of 5 and 18, are more than three times as likely to be overweight as their siblings, and reach over the age of 30. More than 3% of obese mothers with young children are children and adolescents. Overweight children and adolescents do not appear to have higher BMI. High blood pressure is the second most common factor in developing diabetes and cardiovascular disease, and its prevalence is approximately double the rates of the disease overall. Overweight children are a more likely risk factor for developing type 2 diabetes.