Leena Watts
A balanced diet is essential for maintaining good health and reducing the risk of chronic diseases. It provides the body with the necessary nutrients, vitamins, minerals and calories for optimal functioning. To create a model of a balanced diet, one must consider the proportions of food groups such as fruits, vegetables, proteins, grains and dairy. The Healthy Eating Plate, created by Harvard experts, recommends filling half the plate with colourful vegetables and fruits, a quarter with whole grains and the remaining quarter with healthy proteins. MyPlate, by the USDA, also suggests a similar approach, emphasising the importance of customisation based on dietary needs, cultural traditions and personal preferences. This model of a balanced diet can be adapted to various cultural contexts and individual preferences, ensuring that nutritional needs are met while enjoying a diverse and tasty selection of foods.
| Characteristics | Values |
|---|---|
| Fruits | 1/4 of your plate or about 2 cups a day |
| Vegetables | 1/4 of your plate if you’re also eating fruit; otherwise, 1/2 of your plate or 2.5–3.5 cups a day |
| Grains | 1/4 of your plate or about 6 ounces per day |
| Protein | 1/4 of your plate or about 5.5 ounces per day |
| Dairy | Low-fat or fat-free versions whenever possible |
| Calories | Between 1,600 and 3,000 per day for adults, depending on sex, age, and lifestyle |
| Hunger | Eat when mildly hungry; wait at least 2–3 hours between meals |
| Portion control | Put your fork down between bites |
| Distractions | Avoid distractions while eating |
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What You'll Learn
Include fruits and vegetables
Fruits and vegetables are an essential component of a balanced diet, providing essential vitamins, minerals, and antioxidants. Aim to fill half your plate with a variety of colourful fruits and vegetables, including dark green leafy vegetables, yellow and orange produce, red fruits and vegetables, legumes (beans and peas), and citrus fruits.
Fruits and vegetables can be enjoyed raw or cooked, but it is important to note that cooking can reduce their nutritional value, and certain cooking methods, such as deep-frying, can add unhealthy fats. Therefore, it is recommended to consume a variety of raw and cooked fruits and vegetables prepared using healthy cooking methods, such as steaming, grilling, or roasting.
When choosing fruits, opt for whole fruits over fruit juices. Whole fruits contain more nutrients and fibre, while juices often have added sugars and empty calories. Go for fresh, frozen, or canned fruits packed in water instead of syrup. If you do choose to drink juice, select 100% fruit juice.
It is also important to vary your selection of vegetables and fruits. No single fruit or vegetable provides all the nutrients needed for a healthy diet. Try to include non-starchy options, such as apples, pears, and green leafy vegetables, as these can help promote weight loss by preventing blood sugar spikes that increase hunger. Additionally, remember that potatoes do not count towards your vegetable intake due to their negative impact on blood sugar. Instead, choose other vegetables that provide a variety of nutrients and slower-digesting carbohydrates.
By including a diverse range of fruits and vegetables in your diet, you can lower your risk of heart disease and stroke, reduce your chances of developing eye and digestive problems, and positively impact your blood sugar levels.
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Consume grains and proteins
Consuming grains and proteins is an essential part of a balanced diet. Grains and proteins make up two of the five food groups that comprise a balanced diet, the other three being fruits, vegetables, and dairy.
Grains
According to the United States Department of Agriculture (USDA), grains should make up a quarter of your plate. At least half of these grains should be whole grains, such as whole wheat, barley, wheat berries, quinoa, oats, and brown rice. Whole grains have a milder effect on blood sugar and insulin than refined grains. They also tend to contain more fiber and protein.
Proteins
Protein should also make up a quarter of your plate. Protein is often called the body's building block and is used to build and repair tissues and help your body fight infection. Your body uses extra protein for energy. Meat, eggs, fish, beans, nuts, and legumes are examples of protein-rich foods. For older adults, it is recommended to eat a variety of nutrient-dense, low-fat proteins, such as lean meats and poultry, and to include seafood, which is a good source of omega-3 fatty acids. For those on a plant-based diet, tofu, tempeh, and other soy-based products are excellent sources of protein.
Combining Grains and Proteins
When planning a meal, you can combine grains and proteins with fruits and vegetables. For example, a meal could consist of grilled fish over brown rice, a green side salad, and some fruit. Alternatively, you could have soup, consisting of vegetables, whole grains, and healthy protein, such as beans.
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Eat dairy products
Dairy products are an important part of a balanced diet, providing essential nutrients such as calcium, potassium, vitamin D, and protein. These nutrients are vital for building and maintaining strong bones and teeth, as well as supporting overall health and bodily functions.
The Dairy Group, as outlined by MyPlate.gov, includes milk, yogurt, cheese, lactose-free milk, and fortified soy milk and yogurt. It is recommended to opt for low-fat or fat-free versions of dairy products whenever possible. This is because dairy can be high in saturated fat, so making healthy choices is important. For example, the USDA recommends that adults stick to fat-free or low-fat dairy, and the American Heart Association has provided similar guidance. However, it is worth noting that new research suggests that full-fat dairy may not significantly impact heart health.
Dairy products are a great source of calcium, which is crucial for building and maintaining bone health. Calcium requirements vary with age, with adults up to 50 years requiring 1000 milligrams of calcium per day, and women over 50 and men over 70 needing 1200 milligrams. Dairy products are the primary source of calcium for many, and a cup of milk typically provides between 250 and 350 milligrams of calcium.
In addition to calcium, dairy products provide potassium, which is important for maintaining healthy blood pressure. Vitamin D, also found in dairy, helps the body maintain proper levels of calcium and phosphorus, further contributing to bone health. Vitamin D-fortified milk, including soy milk, is an excellent source of this nutrient.
For those who are lactose intolerant or choose not to consume dairy, there are alternative sources of calcium and other nutrients. Lactose-free dairy products, such as lactose-free milk and certain cheeses, can be suitable options. Additionally, fortified soy products, including soy milk and yogurt, can provide similar nutritional benefits to dairy.
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Maintain nutritional needs
A balanced diet fulfils all of a person's nutritional needs. It comprises foods from five groups: fruits, vegetables, protein, grains, and dairy.
Fruits and vegetables
According to the United States Department of Agriculture (USDA), half of your plate should consist of fruits and vegetables. When it comes to vegetables, it is important to remember that cooking them can remove some of their nutritional value, and some methods, such as deep-frying, can add unhealthy fats to a dish. Instead of getting fruit from juice, nutrition experts recommend eating whole fruits. Juice contains fewer nutrients and often has added sugar. People should opt for fresh or frozen fruits or fruits canned in water instead of syrup.
Protein
Protein should make up a quarter of a person's plate. Choose lean red meats, seafood, poultry, eggs, nuts, beans, lentils, and seeds.
Grains
The remaining quarter of your plate should consist of grains. Whole grains include all three parts of the grain: the bran, germ, and endosperm. The body breaks down whole grains slowly, so they have less effect on a person's blood sugar. Additionally, whole grains tend to contain more fibre and protein than refined grains.
Dairy
The USDA recommends accompanying each meal with a serving of low-fat dairy or another source of the nutrients found in dairy. Dairy and fortified soy products are a vital source of calcium. People who are lactose intolerant can opt for low-lactose or lactose-free products or choose soy-based sources of calcium and other nutrients.
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Avoid junk food
A balanced diet is one that fulfills all of a person's nutritional needs. It comprises foods from five groups: fruits, vegetables, protein, grains, and dairy. Eating a balanced diet helps people get the nutrients and calories they need and avoid junk food.
Junk food can be defined as food with little nutritional value, that is high in fat, salt, or sugar. Eating too much junk food can replace healthy choices and lead to short and long-term health complications such as weight gain, diabetes, and heart problems.
Identify emotional triggers
Take time to notice the emotional triggers that can lead to cravings for junk food. Stress is a common trigger for junk food cravings, which can cause your blood sugar to rise and fall quickly, affecting your energy levels and cardiovascular health. Planning ahead and finding healthy coping mechanisms can help you choose healthier options. For example, instead of eating, try going for a walk, calling a friend, or meditating when you feel stressed.
Get enough sleep
Lack of sleep is associated with junk food cravings. A study found that sleep restriction resulted in more hunger and a reduced ability to control intake. Aim for 7-8 hours of sleep each night, and try to stop eating a few hours before bedtime to improve sleep quality.
Fill up on healthy fats and protein
Healthy fats and protein help you feel full and reduce cravings. Include foods like nuts, avocado, fatty fish like salmon, beans, and other plant-based proteins in your diet.
Add variety to your diet
The more varied your diet, the less likely you will crave junk food. Try adding new types of fruits, vegetables, and grains to your meals. Eating a diverse range of colorful foods also boosts your overall health and helps with disease prevention.
Plan your meals
Planning your meals and snacks ahead of time helps you make choices based on nutrition rather than convenience. It can be challenging to find healthy alternatives to junk food, but tools like the Health Star Rating system can help you compare the nutritional value of packaged foods. Remember to also read nutrition panels on packaged items to understand the nutritional content.
Exercise regularly
Balancing your junk food intake with increased exercise can help burn off extra energy and prevent weight gain. While you don't have to give up all your favorite treats, it's important to consume them in moderation and ensure they make up only a small part of an otherwise balanced diet.
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Frequently asked questions
A balanced diet is one that provides all the nutrients your body needs to function properly and stay healthy. It includes foods from five groups: fruits, vegetables, protein, grains, and dairy.
A useful model to follow is the 'Healthy Eating Plate', created by nutrition experts at the Harvard T.H. Chan School of Public Health. The model suggests that half of your plate should consist of fruits and vegetables, a quarter of whole grains, and the remaining quarter a source of protein.
It is important to be mindful of your hunger levels and eat only when you are hungry, stopping when you are comfortably full. It is also beneficial to be aware of your portion sizes and the variety of foods you are eating.
