Milly Gaines
Diets are often associated with weight loss, but the term simply refers to the food and drink consumed by an individual or group. A healthy diet is one that is balanced and includes a variety of food groups in the right proportions. A healthy diet typically includes fruit and vegetables, starchy foods, dairy, protein, and unsaturated fats. The Nordic diet, for example, is a diet that is good for weight loss and heart health, and is based on Scandinavian eating patterns, including fish, whole grains, and cold-climate vegetables. Intermittent fasting has also been shown to be beneficial for weight loss, but it is difficult for many people to stick to.
| Characteristics | Values |
|---|---|
| Purpose | Weight loss, health maintenance, or both |
| Time frame | Long-term, sustainable changes are more effective than short-term, restrictive approaches |
| Food groups | Fruits, vegetables, whole grains, lean protein, healthy fats, etc. |
| Calorie intake | Should be balanced with energy expenditure to avoid unhealthy weight gain |
| Fat intake | Less than 30% of total energy intake, with a preference for unsaturated fats over saturated and trans-fats |
| Sugar intake | Limit free sugars to less than 10% of total energy intake, with a further reduction to 5% for additional health benefits |
| Individualization | Find an approach that suits your preferences, cultural traditions, and economic factors |
| Gradual changes | Introduce gradual lifestyle changes for sustainable weight loss and improved health |
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What You'll Learn
Weight loss
The first step to losing weight is to find an approach that works for you. This may involve making a permanent shift towards healthier eating habits, such as eating natural, unprocessed foods and reducing your intake of processed foods and added sugars. Eating more vegetables is a great way to stay full while keeping your calorie intake low. It is also important to consider your specific goals and what you are trying to achieve. Ask yourself, "How much weight do I need to lose to be healthy?" and set realistic, personalised goals.
In addition to diet, increasing your physical activity is key to losing weight. Even small amounts of exercise, such as 10 minutes a day, can make a difference. You can also try to gradually increase your activity levels over several weeks, with a goal of 30 minutes of exercise per day. Combining dietary changes with increased physical activity is the most effective way to lose weight.
There are also other strategies that can help with weight loss. Intermittent fasting has been shown to be effective, although it may not be more effective than simply restricting calories and following a normal eating schedule. Another strategy is to self-monitor your dietary intake and physical activity through a food diary, which can help you develop a sense of accountability and reduce your food intake.
Remember, weight loss should be done in a healthy and sustainable way. Aim for a gradual weight loss of 0.5-2 lbs per week, as this is more likely to be maintained in the long run.
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Healthy eating habits
Eating a healthy, balanced diet is an essential part of maintaining good health and can help you feel your best. Here are some tips to develop healthy eating habits:
Focus on Whole Foods
Eat a variety of whole foods, including fruits, vegetables, whole grains, lean protein, and healthy fats. These foods are packed with essential nutrients, antioxidants, and fibre, which are vital for maintaining a healthy body and preventing diseases.
Increase Your Fruit and Vegetable Intake
Aim for at least 5 portions of fruits and vegetables every day. They can be fresh, frozen, canned, dried, or juiced. Fruits and vegetables are excellent sources of vitamins, minerals, and fibre, and they add colour, flavour, and texture to your meals.
Choose Healthy Protein Sources
Include a variety of protein-rich foods such as seafood, lean meats, poultry, eggs, beans, peas, lentils, and nuts. These foods provide essential amino acids for muscle growth and repair. Fish, especially oily fish like salmon, is an excellent source of omega-3 fatty acids, which have numerous health benefits, including a reduced risk of cardiovascular disease.
Dairy or Fortified Soy Alternatives
Include dairy products like milk, yoghurt, or cheese in your diet, as they are excellent sources of calcium, protein, and other essential nutrients. If you are lactose intolerant or prefer plant-based options, choose fortified soy alternatives to ensure you're getting enough calcium and vitamin D.
Limit Processed and Sugary Foods
Reduce your intake of highly processed meats, sugary drinks, and snacks. These foods tend to be high in added sugars, unhealthy fats, and sodium, which can negatively impact your health. Read nutrition labels to become more aware of the content of the food you're eating.
Include Probiotics
Add fermented foods like kimchi, sauerkraut, yoghurt, miso, or kombucha to your diet. These foods contain live probiotics that support your overall health and boost your gut health.
Remember, making small, sustainable changes to your diet can lead to significant results. You don't have to implement all these tips at once. Choose a few that resonate with you and gradually incorporate more healthy habits into your daily routine.
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Balanced diet
A balanced diet is an important part of maintaining good health and can make you feel your best. It gives your body the nutrients it needs to function correctly and efficiently. A healthy diet consists of many fresh fruits and vegetables and limits processed foods.
The number of calories you need depends on your sex, age, and activity level. Generally, males tend to need more calories than females, and younger people need more calories than older people. The average person needs about 2,000 calories every day to maintain their weight. The key to a healthy diet is to eat the right amount of calories for how active you are, balancing the energy you consume with the energy you use. If you eat or drink more than your body needs, you will put on weight because the energy that is unused gets stored as fat.
A balanced diet should provide all the nutrients a person requires without going over the recommended daily calorie intake. According to the Center for Science in the Public Interest, 4 of the top 10 leading causes of death in the United States are directly linked to diet. A balanced diet can help reduce the risk of developing chronic health conditions and diseases.
The USDA’s “ChooseMyPlate” initiative recommends filling half your plate with fruits and vegetables, a quarter with protein, and a final quarter with whole grains and starches. The Healthy Eating Plate, created by the Harvard T.H. Chan School of Public Health, was designed to address deficiencies in the USDA’s MyPlate. It provides detailed guidance to help people make the best eating choices. The Healthy Eating Plate recommends that about half of your ingredients are a variety of colourful vegetables, and the other half a mix of whole grains and a healthy protein.
A balanced diet should include foods from the five major groups: fruits and vegetables, lean protein, dairy, and soluble fibre. Fruit and vegetables are a good source of vitamins, minerals, and fibre and should make up just over a third of the food you eat each day. It is recommended that you eat at least 5 portions of fruit and vegetables every day. Starchy carbohydrates, such as potatoes, bread, rice, pasta, and cereals, are also an important part of a balanced diet.
Protein should make up about a quarter of your plate. Good sources of protein include meat, eggs, fish, beans, nuts, and legumes. Fish is a particularly good source of protein as it contains many vitamins and minerals and is rich in omega-3 fatty acids. It is recommended that you eat at least 2 portions of fish a week, including 1 portion of oily fish. Pulses, including beans, peas, and lentils, are naturally very low in fat and high in fibre, protein, vitamins, and minerals.
Some fat in the diet is essential, but it is important to pay attention to the amount and type of fat consumed. There are two main types of fat: saturated and unsaturated. Too much saturated fat can increase the amount of cholesterol in the blood, which increases the risk of developing heart disease. It is recommended that, on average, men should have no more than 30g of saturated fat a day, and women should have no more than 20g.
It is also important to be mindful of your eating habits. You should aim to eat when you are hungry but not ravenous, as this can lead to binge eating. Stop eating when you are comfortably full. Researchers have found that the more food you are served, the more you are likely to eat, so it is important to exercise portion control.
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Food and drink limitations
Medical Conditions and Special Dietary Needs
People with specific medical conditions or special dietary needs should consult a doctor or registered dietitian for personalized advice. For example, individuals with diabetes are advised to follow a healthy eating pattern that includes moderate amounts of all food groups, focusing on low glycemic index (GI) foods that don't spike blood sugar levels. This includes high-fiber foods, lower-sugar fruits, lean proteins, and starchy and non-starchy vegetables, while limiting sugary drinks, refined grains, and sweets. Similarly, those with kidney or cardiovascular disease may need to limit their fluid intake, while individuals with hypertension should reduce their sodium (salt) consumption.
Allergies and Intolerances
Food allergies can cause adverse reactions and even life-threatening responses. Common allergens include wheat, eggs, soy, fish, shellfish, and nuts. Individuals with celiac disease, for instance, must adhere to a gluten-free diet, avoiding wheat, barley, rye, and sometimes oats due to cross-contamination concerns. Those with lactose intolerance should avoid cow's milk and other dairy products, opting for alternative sources of protein, calcium, and vitamin D.
Dietary Preferences and Plans
Beyond medical necessities, some individuals choose to follow specific dietary plans or restrictions for health, ethical, or personal reasons. Here are some common dietary limitations associated with popular diets:
- Low-carb diets: These diets generally limit alcohol, refined sugar, and highly processed foods. Carb allowances can vary, but they typically stay below 120 grams of carbs per day. Emphasize animal-based proteins, non-starchy vegetables, fruits, nuts, seeds, and healthy fats like avocado and olives.
- Mediterranean Diet: This diet emphasizes plant-based foods and healthy fats, focusing on overall eating patterns. It encourages the consumption of whole grains, vegetables, fruits, beans, lentils, nuts, and extra virgin olive oil. It suggests limiting red meat, sweets, sugary drinks, butter, and processed meats, while favoring poultry, fish, or beans as protein sources.
- Vegetarianism: A vegetarian diet avoids meats, poultry, and fish, although some variations allow for certain animal-based foods. It primarily relies on plant-based options, including vegetables, fruits, grains, beans, and nuts.
- Full Liquid Diet: This diet includes foods that are in liquid form or can be pureed and strained to a liquid consistency. It may be recommended after certain surgeries or for individuals with specific medical conditions. It focuses on nutritionally dense foods with higher levels of protein and carbohydrates. Approved foods include protein shakes, non-fat dry milk, instant breakfast powders, strained fruit and vegetable juices, broths, puddings, and ice cream without nuts or candy.
General Healthy Eating Guidelines
Regardless of specific diets or limitations, some general principles for healthy eating include:
- Balanced diet: Eating a variety of foods in the right proportions is essential for maintaining good health. The NHS recommends the "Eatwell Guide", which encourages a balanced diet with at least 5 portions of fruit and vegetables daily, higher-fibre starchy foods, dairy or alternatives, beans, pulses, protein, and unsaturated oils in moderation.
- Moderation in fats and sodium: While some fat is essential in a diet, excessive saturated fat can increase cholesterol and the risk of heart disease. Opt for unsaturated fats and oils, and consume them in small amounts. Similarly, limit sodium (salt) intake to maintain healthy blood pressure levels and reduce the risk of heart-related issues.
- Limit refined carbohydrates and added sugars: Refined carbs and added sugars provide excess calories with minimal nutritional value. They can cause blood sugar spikes and increase the risk of obesity and tooth decay. Opt for whole grains and natural sources of sugar, like fruit.
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Intermittent fasting
There are several ways to practice intermittent fasting. The most common methods involve daily 16-hour fasts with an 8-hour eating window, or the 5:2 approach, where you eat normally for five days and then restrict your diet for the remaining two. Some people also do 24-hour fasts twice a week. It is important to note that this type of dietary pattern may not be suitable for everyone. It is recommended that you consult a doctor or dietitian before starting intermittent fasting, especially if you have a medical condition.
During a fast, the body exhausts its sugar stores and starts burning fat, a process known as metabolic switching. This can lead to weight loss and improve some markers of health, such as blood pressure and cholesterol levels. However, it is important not to overdo it, as it can be difficult to get enough vitamins, minerals, and other nutrients if you are not eating regularly. It is also important to be mindful of potential side effects, such as hunger and weakness, which may impact your daily life and performance.
If you are interested in trying intermittent fasting, it is best to start small and ease into the practice. You can begin by avoiding snacks between meals, especially late-night snacking, and gradually increasing the duration of your fasts. It is also important to ensure you stay hydrated during your fast, and coffee can be beneficial as it helps to suppress your appetite.
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Frequently asked questions
Losing weight is not easy, but it is possible when done right. The first step is to find an approach that works for you and keeps you motivated. A healthy diet is one that includes a wide variety of foods in the right proportions, with the right amount of food and drink to achieve and maintain a healthy body weight. It is recommended that you eat at least 5 portions of fruit and vegetables every day, as well as base meals on higher-fibre, starchy foods.
A healthy diet includes natural, unprocessed foods over pre-packaged meals and snacks. Some examples are: fish, apples, pears, whole grains such as rye and oats, and cold-climate vegetables including cabbage, carrots, and cauliflower.
Foods that are high in saturated fats, trans fats, free sugars, and salt/sodium are not part of a healthy diet and should be avoided. These include fatty meat, butter, palm and coconut oil, cream, cheese, and ghee.
Total fat intake should not exceed 30% of total energy intake. Intake of saturated fats should be less than 10% of total energy intake, and trans-fats should be less than 1%.
Yes, in addition to a healthy diet, intermittent fasting has been shown to be effective for weight loss. Restricting eating to earlier in the day aligns better with our bodies' circadian rhythms and is less likely to cause food to be stored in fat cells.
