Leena Watts
A balanced diet is essential for maintaining good health and reducing the risk of chronic illnesses and diseases. It provides the body with the necessary nutrients to function effectively, including calories, vitamins, and minerals. The specific nutritional needs vary depending on age, sex, and physical activity levels. Generally, a balanced diet consists of a variety of fruits, vegetables, grains, protein, and dairy, with limited consumption of processed and deep-fried foods. The recommended daily intake includes 5 portions of fruits and vegetables, lean protein, low-fat dairy, and whole grains. It is important to exercise portion control and combine a balanced diet with regular exercise to maintain a healthy body weight and lower the risk of obesity.
| Characteristics | Values |
|---|---|
| Purpose | To fulfil all of a person's nutritional needs, giving the body the nutrients it needs to function correctly and effectively |
| Calories | On average, adults require 1,600 to 3,000 calories per day, but this depends on age, sex, and physical activity level. Men tend to need more calories than women, and people who exercise need more calories than those who don't. |
| Nutrients | A balanced diet includes fruits, vegetables, protein, grains, and dairy. |
| Ratio | Half fruits and vegetables, a quarter protein, and a quarter grains. |
| Variety | A balanced diet includes a variety of foods from the five food groups. |
| Portion Control | It is important to eat the right amount of food to maintain a healthy body weight. |
| Weight Loss | A balanced diet, combined with exercise, can help with weight loss. |
| Health | A balanced diet helps maintain good health, improves energy, and reduces the risk of developing chronic health conditions and diseases. |
| Fat | Some fat is essential for a healthy diet. Choose healthy unsaturated oils such as olive oil, sunflower oil, and safflower oil. Limit intake to about 27 grams per day. |
| Sugar | Avoid sugary drinks and limit fruit juices due to their high sugar content. |
| Fibre | Choose high-fibre foods such as fruits, vegetables, legumes, whole grains, and nuts. |
| Exercise | Staying active is important for weight control and overall health. |
| Individuality | A balanced diet varies for each person. What is healthy for one person may not be suitable for another. |
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What You'll Learn
The importance of fruits and vegetables
A balanced diet is one that provides all the nutrients a person requires without exceeding the recommended daily calorie intake. It helps maintain good health, reduces the risk of developing chronic health conditions and diseases, and gives your body the nutrients it needs to function correctly. The number of calories your body needs depends on your age, gender, and activity level. Generally, men need more calories than women, and people who exercise need more calories than those who don't.
Fruits and vegetables are an essential part of a healthy, balanced diet. They are naturally good and contain vitamins and minerals that can help keep you healthy. They are also low in fat, salt, and sugar, and are a good source of dietary fibre, which can help you feel fuller for longer and prevent overeating.
It is important to eat a variety of fruits and vegetables, as no single fruit or vegetable provides all the nutrients you need to stay healthy. Eating a range of different types and colours of produce will give your body a mix of nutrients. For example, green leafy vegetables such as lettuce, spinach, and kale are associated with a decreased risk of cardiovascular disease, while citrus fruits such as oranges and grapefruit can help protect against cancer.
The United States Department of Agriculture (USDA) recommends that half of your plate should consist of fruits and vegetables. This can include fresh, frozen, or canned produce, as well as juices, although nutrition experts recommend getting your fruit from whole fruits rather than juice, as juice contains fewer nutrients and often has added sugar.
In addition to their nutritional benefits, fruits and vegetables are also a handy snack food that can be easily carried to work or school. They can be eaten raw or cooked and added to your favourite recipes or family meals.
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Lean protein sources
When choosing protein sources, it is important to consider the "protein package" as foods containing protein also include fats, carbohydrates, vitamins, minerals, sugar, sodium, additives, and other components. For example, meat provides high-quality protein but some meats also provide unhealthy amounts of saturated fats and sodium. Therefore, it is recommended to choose leaner meats and poultry. According to the United States Department of Agriculture (USDA), meats that are high in saturated fat include red meat and processed meat, which have been linked to higher risks of cardiovascular disease and diabetes.
Lean Meats
Chicken, turkey, beef, and pork are excellent sources of high-quality protein and important nutrients like iron and zinc. To avoid unhealthy saturated fat, opt for lean or low-fat meat options such as lean ground beef, pork loin, or skinless chicken breasts.
Fish
Fish like salmon, tuna, mackerel, halibut, and anchovies are rich in protein and omega-3 fatty acids, which are beneficial for heart health. Seafood options that are lower in methylmercury, such as salmon and trout, are recommended. White-fleshed fish are also good choices as they are quite lean, providing less than 3 grams of fat and around 20-25 grams of protein per serving.
Dairy
Dairy products like milk, cheese, yogurt, and cottage cheese are rich in protein, calcium, and other essential nutrients. Greek yogurt, in particular, is a great option as it is high in protein and nutrients such as calcium, vitamins, and minerals. Low-fat or non-fat dairy options are recommended to limit the intake of saturated fat.
Plant-Based Sources
For those following a vegetarian or vegan diet, there are plenty of plant-based protein sources available. Tofu, tempeh, peas, chickpeas, quinoa, beans, and nut butters are all good options. Quinoa is one of the only complete sources of vegetarian protein, containing all nine essential amino acids. Eggs are also an excellent source of protein and can be included in a vegetarian diet.
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Dairy and alternatives
Dairy products are an important source of calcium, which is essential for building and maintaining strong bones and teeth. Milk, yoghurt, and cheese are good sources of protein and calcium. However, they can be high in saturated fat, so it is important to opt for lower-fat options. For example, semi-skimmed or skimmed milk, lower-fat hard cheeses, and lower-fat yoghurt.
Dairy products also contain potassium and vitamin D, which help to maintain healthy blood pressure and bone health, respectively. Vitamin D helps the body maintain proper levels of calcium and phosphorus. While dairy is a good source of these nutrients, it is not the only source. For those who do not consume dairy, calcium can be found in other foods, and vitamin D is also present in some fish, such as salmon.
For those who are unable or choose not to consume dairy, there are alternatives. Unsweetened calcium-fortified plant-based alternatives, such as those made from soya, coconuts, or oats, can be a good source of calcium and protein. Fortified soy milk, for example, is often fortified with calcium and vitamin D. Lactose-free milk is another option, as well as other calcium-rich foods, although the amount of calcium absorbed from non-dairy sources may vary.
It is worth noting that dairy alternatives may not always be included in the 'Dairy Group' in dietary guidelines. For example, in the US, the Dairy Group includes milk, yoghurt, cheese, lactose-free milk, and fortified soy milk and yoghurt, but it does not include foods made from milk with little calcium and a high-fat content, such as cream cheese, sour cream, cream, and butter. Therefore, when choosing dairy alternatives, it is important to consider the nutritional content and opt for fortified options to ensure adequate nutrient intake.
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Whole grains
The American Heart Association recommends choosing whole grains and products that contain at least 51% whole grains versus refined grains. The 2015-2020 Dietary Guidelines for Americans recommend eating 6 ounces of grain foods daily (based on a 2000-calorie diet) and getting at least half or 3 ounces of that grain intake from 100% whole grains. However, it is important to note that the amount of grains a person needs to eat depends on their age, sex, height, weight, and physical activity level.
Some examples of whole grains include muesli, quinoa, wild rice, whole wheat bread, and whole grain bagels.
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Healthy fats
A balanced diet is one that provides all the nutrients a person requires without exceeding the recommended daily calorie intake. The number of calories a person needs depends on their age, sex, and physical activity level. On average, adults require between 1,600 and 3,000 calories per day.
A balanced diet typically includes fruits, vegetables, dairy, grains, protein, and healthy fats. While fat often has a negative reputation, it is a necessary nutrient for a healthy diet. Fat is a source of fatty acids, which are essential as the body cannot produce them itself. Vitamins A, D, and E are fat-soluble, meaning they can only be absorbed with the help of fats.
There are four main types of fats: saturated, monounsaturated, polyunsaturated, and trans fats. Saturated fats are typically solid at room temperature and are found in both animal and plant-based foods, including meat, dairy, palm oil, and coconut oil. Consuming too much saturated fat can increase the risk of heart disease and stroke by raising "bad" LDL cholesterol levels in the blood. Trans fats should be avoided as they also negatively impact cholesterol levels.
Monounsaturated and polyunsaturated fats are liquid at room temperature and are considered healthier alternatives to saturated and trans fats. Examples of foods containing these fats include canola oil, soybean oil, corn oil, safflower oil, sunflower oil, nut oils, chia seeds, ground flax, avocado, nuts, seeds, and fish. The recommended intake of healthy fats is about 27 grams per day.
One of the most well-known healthy fats is olive oil, especially extra virgin olive oil, which is the least processed type. Other plant oils, such as sunflower oil and safflower oil, are also considered healthy choices. These oils can be used as substitutes for saturated fats like butter in cooking and food preparation.
In addition to including healthy fats in your diet, it is important to practice portion control. While fats are nutrient-dense and provide 9 calories per gram, consuming too many calories, regardless of the source, can lead to weight gain. Therefore, it is crucial to balance your calorie intake with your physical activity level.
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Frequently asked questions
A balanced diet is one that provides all of a person's nutritional needs. It includes foods from five major groups: fruits, vegetables, protein, grains, and dairy. A balanced diet helps maintain good health, reduces the risk of diseases, and provides the body with the energy it needs to function effectively.
A balanced diet should include a variety of fruits and vegetables, with at least five portions a day. It should also include some lean protein, such as meat, fish, eggs, beans, or nuts, and some dairy or dairy alternatives. Grains, especially whole grains, should also be included, and healthy fats like olive oil.
The exact ratios may vary depending on individual needs, but a general guideline is to fill half your plate with fruits and vegetables, a quarter with protein, and a quarter with grains. MyPlate recommends that half of the grains should be whole grains. It's also important to exercise portion control and not overeat.
