In order to lose weight, you should get most of your calories from low-calorie and nutrient-dense food sources. Make sure to include foods such as high-quality proteins (including lean meats and nuts), fruits, vegetables, and complex carbohydrates (including whole wheat breads, legumes, and brown rice).  Avoid heavily processed foods whenever possible. These include some foods that are frozen (including frozen pizza) and pre-made meals (including microwavable meals).  These foods have been processed to compensate for the nutrition lost during the process it took to preserve the food.  Choose fresh foods as often as possible. Eating multiple (four to five) small meals throughout the day instead of three large meals can help keep your metabolism elevated and suppress your appetite so that you don’t overeat. If you decide to eat more frequently throughout the day, make sure that you keep your portion sizes small. You don’t want to end up eating large meals more frequently and taking in more calories! Saturated fats are less beneficial to your body than unsaturated fats and are usually found in animal sources, like dairy and meat, as well as hydrogenated oils. Many of our favorite desserts are filled with saturated fats, so make sure you limit your intake of sweets.  Palm and coconut oils contain the highest amount of saturated fat, but butter and rendered animal fats like lard and shortening contain a considerable amount of saturated fat as well. Fish oil, for all its healthy omega-3 fatty acids, also contains a high percentage of saturated fat, so it is important to read the nutrition labels on the foods you purchase and limit your portion sizes when eating foods that are high in saturated fats.  It is important to note that you should limit, not exclude, saturated fats from your diet. The occasional saturated fat is fine, especially if it offers other health benefits, such as fish or nuts. Simply put, lean protein sources have less saturated fat and fewer calories.  Replace beef and pork with chicken and...

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Write a summary of the previous text in Vietnamese:
Thực đơn ăn sạch. Chia thức ăn thành nhiều bữa nhỏ trong ngày. Hạn chế hấp thụ chất béo bão hòa. Bỏ qua thịt đỏ và chọn thịt nạc chứa nhiều protein. Cung cấp cho cơ thể sản phẩm sữa ít béo. Hạn chế đồ uống chứa cồn. Tránh các loại thức ăn chứa nhiều calo.