The basic principles of a healthy diet help to maintain physical and emotional health, as well as prevent various diseases. Here are the basic principles:

1. Food Variety: Consume a wide variety of foods including vegetables, fruits, nuts, seeds, proteins, grains, and dairy products. Variety provides important nutrients.
2. Moderation in consumption: Control portions and avoid overeating. Moderate consumption helps maintain a normal weight and prevents overeating.
3. Balance macro and micronutrients: Include proteins, carbohydrates and fats in your diet in the appropriate ratio. Also pay attention to vitamins and minerals.
4. Reduce sugar and processed foods: Avoid excessive consumption of sugar and foods rich in added sugars, as well as processed foods that may contain many additives and preservatives.
5. Write a food diary: Keeping a food diary can help you realise what and how much you are eating and help you make adjustments to your diet.
6. Water intake: Drink enough water to maintain hydration. Water is definitely an important part of a healthy diet.
7. Consider your body’s needs: Your diet should be tailored to your lifestyle, physical activity and body needs. For example, more active people need more calories and protein.
8. Avoid Snacking and Fast Food: Try to avoid excessive snacking between meals and frequent consumption of fast food, which is often high in calories and low in nutrients.
9. Count Calories Consumed: If your goal is weight management, consider the number of calories you consume and try to keep a balance between calories consumed and calories expended.
10. Listen to your body: Learn your body and its needs. It can tell you when you are hungry and when you need a snack. Approach nutrition consciously.
11. Prefer cooking at home: Prepare food at home so you can control the ingredients and quality of cooking.
12. Consistency: Healthy eating is not a one-time decision but a lifestyle. It is important to follow the principles of healthy eating on a consistent basis.

A healthy diet promotes overall well-being and maintains a normal physical and emotional state. Following these principles can help you feel better and live a more fulfilling life.