this will only happen if one eats more food than one needs.대략 해석이 되는것 같은데요.one 의 정확한 뜻 좀 알려주세요.one 이 한정사로 쓰이는건지 대명사로 쓰이는 건지 모르겠네요.Some people say snacking, eating between meals, is not a healthy habit because it increases the sugar level in the blood. However, it can be helpful in meeting calorie and nutrient requirements, especially for some people, such as children, the elderly, or people with a very active lifestyle. Although snacking has been thought to contribute to weight gain.이 부분이 앞의 문장입니다.