Eating a diet that has lots of foods and drinks that are high in calories makes you more likely to gain weight. These foods are generally high in fat or sugar (or both). Particular culprits are highly processed manufactured foods that are often fried (“fast foods”), such as burgers, or fries, as well as fried snack foods such as crisps, and confectionery. Also, having lots of sugary drinks, such as soft drinks or fizzy drinks, or fatty and sugary drinks such as smoothies and milkshakes, is linked to weight gain. Fruit juices can also contain as many calories from their natural sugars as sweetened manufactured drinks do, and therefore should not be consumed in large amounts. Alcoholic drinks also have a high calorie content. Eating a lot of meat has also been linked to weight gain. And the less active you are, the more likely it is that high-calorie foods and drinks will make you gain weight. So to reach and maintain a healthy weight, you need to consume the right foods (and drinks) and have as active a lifestyle as you can.