Compared to most countries, Americans tend to eat much bigger portions. Even if people in European countries eat fatty foods, they tend to eat less food, so they tend to be less obese. These diets can, however, teach portion control. For instance, Americans tend to eat more carbohydrates in big portions than anything else. If you can wean yourself from that habit, you'll be in better shape in the long run.
Women can also reduce their chances of getting breast cancer by changing eating habits.
The typical American would have to triple the amount of fruits and vegetables they eat to get the recommended daily allowance of vitamins, which is unrealistic. As for nutritional supplements, most of the experts agreed women should take a daily multivitamin. Folic acid supplements for women are recommended to prevent birth defects. By the same token, supplements do not serve to replace good foods, so don't overdo them. Extremely high doses of certain vitamins can put a woman's health at risk rather than help her.