A hand is passing a bowl of salad across a festively set table

What is a healthy diet?

March 11, 2026Leilah FörsterReading time: 4,1 Minuten

Healthy eating isn't a trend or a short-term diet. It's a form of self-care and a cornerstone of your health. That's because what you eat every day affects virtually every aspect of your body: whether it's your mood, energy levels, metabolism, or immune system—they all benefit from a healthy diet. 

But what does “healthy eating” actually mean? According to the latest nutritional research, it means one thing above all else: a balanced intake of various food sources, with a primary focus on plant-based foods.

Because the fact is: Whole, natural, and—as much as possible—organically produced foods provide your body with the nutrients it needs to perform its daily functions. A healthy diet also plays a key role in preventing numerous diseases— including cardiovascular disease, metabolic disorders, and chronic inflammation.

In this post, you'll learn what healthy eating really means and how you can easily incorporate it into your daily routine, even when you're short on time. 

What is part of a healthy diet?

Top view of a selection of healthy foods—such as brown rice, broccoli, avocado, nuts, tomatoes, carrots, and olive oil—on a rustic wooden table; Image note: AI-assisted content

A healthy diet follows a simple principle: The more natural and unprocessed a food is, the better it can provide your body with essential nutrients:

  • Beverages (Basic): About 1.5–2 liters of water or unsweetened herbal teas a day help keep your metabolism and digestion going.
  • Vegetables & Fruit: At least 5 servings a day—ideally 3 servings of vegetables and 2 servings of fruit. They provide fiber, vitamins, antioxidants, and phytochemicals.
  • Complex carbohydrates: Whole-grain foods such as rolled oats and brown rice, legumes such as lentils and beans, and starchy vegetables such as potatoes, peas, and corn provide you with a steady supply of energy and keep you feeling full for a long time.
  • Sources of protein: Legumes , fish, eggs, plant-based alternatives, and moderate amounts of meat support muscle function, hormone production, and cell regeneration.
  • Healthy Fats: High-quality oils such as flaxseed oil, hemp oil, and olive oil provide essential fatty acids and support the cardiovascular system as well as heart and brain health. 
  • Sweets & Highly Processed Foods: You should enjoy sugar , white flour, and ready-made meals only occasionally and in moderation to give your metabolism—and especially your pancreas and liver—a break.

What is an alkaline diet?

Many metabolic processes produce byproducts that are either acid-forming or alkaline-forming. If acid-forming foods predominate over the long term, this can place a strain on the body—particularly the kidneys, connective tissue, skin, and muscles. Therefore, a predominantly alkaline diet aims to support the body’s natural acid-base balance and reduce the intake of acid-forming foods. In general, foods can be classified as follows:

Alkaline-forming foods Acid-forming foods
Almost all types of vegetables Animal products such as meat, sausage, fish, and cheese
Fruit, especially apples, bananas, berries, kiwis, and apricots White flour products such as pasta, bread, and other baked goods
Mushrooms, especially button mushrooms and porcini mushrooms Luxury foods such as alcohol, sugar, coffee, black tea, and soft drinks
Potatoes, herbs, sprouts, seeds such as flax and hemp seeds, nuts such as almonds and Brazil nuts, and sunflower seeds

Important: This is not about strict abstinence or completely avoiding acid-forming foods, but rather about consciously increasing the proportion of alkaline-forming foods to support the body's natural regulatory processes.

Is a sugar-free diet beneficial for long-term health?

A person is sprinkling brown powder with a spoon over a bowl of porridge with blueberries, banana slices, and walnuts; Image note: AI-assisted content

Not all sugars are the same—what matters is the form in which you consume them. Natural sugars from fruits or vegetables are always found in combination with fiber, vitamins, minerals, and phytochemicals. These slow down the absorption of sugar into the bloodstream and ensure a more steady supply of energy.

Added sugar, on the other hand, is found in isolation—for example, in candy, processed foods, or soft drinks. It enters the bloodstream quickly, causing sharp spikes in blood sugar and causing blood sugar levels to drop rapidly again. In the short term, this can lead to cravings, fatigue, and energy crashes—and in the long term, it can put a strain on the pancreas, liver, gut flora, and metabolism. High sugar intake also promotes inflammatory processes and increases the risk of obesity and insulin resistance.

The following tips can make it easier to stick to a low-sugar diet:

  • Read labels to identify hidden sources of sugar (such as dextrose, fructose, glucose, invert sugar, or fructose and glucose syrup).
  • Replace sugary drinks with water or unsweetened teas. 
  • Combine meals with protein and fat. This helps stabilize blood sugar levels.
  • Use sugar substitutes such as cinnamon, vanilla, or dates. 
     

How can I eat healthy in my daily life—despite stress and a lack of time?

A smiling woman in a bright kitchen is preparing a meal in a glass container filled with rice, broccoli, and vegetables; Image note: AI-assisted content

Healthy eating can still be a priority even in a hectic daily routine—and with a few simple strategies, you can make it a relaxed, nutrient-rich experience without any pressure:

  • Meal Prep: Cook once , eat several times. Prepare larger portions that will last for several days. This saves you time, preserves many nutrients, and helps you avoid making spontaneous, unhealthy choices.
  • A well-stocked pantry: rolled oats, frozen vegetables, legumes, whole-grain pasta, nuts, eggs, and healthy oils provide a solid foundation for quick, nutrient-rich meals.
  • Quick Recipes: Whether it's a colorful salad with lentils and feta, a smoothie with oats and berries, or roasted vegetables with hummus—there are plenty of recipes that are quick to make yet still nutritious. 
  • Establish routines: A regular meal schedule, a snack packed for the go, and a water bottle always within sight—all of these things help ensure you’re well taken care of, even on long days.
  • Stay realistic: Eating healthy every day doesn't have to be perfect. What's much more important is finding an easy, straightforward approach that you can stick with over the long term.

Which dietary supplements can effectively support a healthy diet?

Close-up of a spoon drizzling dark oil over a fresh salad; a bottle of TISSO Pro Omega Ultra is visible in the background

Even if we eat a balanced diet, our meals are often not enough to meet our daily nutritional needs. This is because nutrient-poor soils, early harvesting, and long transport distances mean that many foods no longer have the same nutrient content as they used to. In addition, many nutrients are lost through cooking, frying, and heating.

This is exactly where high-quality dietary supplements can help. Certain essential nutrients that play a key role in many bodily functions are particularly important :

The Nutrient Package Basic provides you with a solid foundation of essential nutrients . It contains all the important vitamins, minerals, vitamin-like substances, and plant-based nutrients your body needs to perform its daily functions.

Conclusion: Adopting a Healthy Diet in a Long-Term and Holistic Way

Healthy eating isn’t rocket science—it’s a conscious choice you make for your body. By focusing on a colorful, fresh, and balanced diet while cutting back on refined sugar and highly processed foods, you’re laying the ideal foundation for long-term health. In addition, targeted micronutrients—such as the Basic nutrient package or omega-3 fatty acids —can round out your nutrient intake—especially when stress, a lack of time, or increased nutritional needs make it difficult to meet your requirements.

But remember: Whether it’s a plant-based, alkaline-rich diet or smart meal-prep routines—it’s not about doing everything “right,” but about making conscious food choices and finding ways to stick with them in the long run. After all, healthy eating should be simple, straightforward, and practical for everyday life. 

Sources

FREQUENTLY ASKED QUESTIONS

A healthy diet is characterized by the fact that it provides the body with all the essential nutrients and is sustainable in the long term. It consists primarily of plenty of vegetables, fruits, whole grains, high-quality proteins, and healthy fats. Highly processed foods and ready-made products should be eaten only rarely.

A low-cholesterol diet means, above all, consuming less saturated fat and trans fat, as these can raise LDL cholesterol levels. Instead, the focus is on vegetable oils, nuts, high-fiber foods, and sources of omega-3.

In many cases, a balanced diet can adequately meet nutritional needs. However, supplements can be helpful if certain essential nutrients are not being consumed in sufficient amounts, for example Vitamin D3 or Omega-3. Supplements are particularly helpful when there is an increased need or when deficiencies have been identified.

Individual nutrient needs depend on factors such as age, gender, activity level, stress levels, and overall health. To better understand these needs, food diaries, blood tests, and physical symptoms can provide clues. Professional counseling can also help prevent specific nutrient deficiencies.

Omega-3 Fatty Acids play an important role in heart health, brain function, and vision. Since many people do not consume enough of them, fatty fish, algae oil, or high-quality supplements are good ways to make up for any deficiency. A balanced ratio of fatty acids is crucial.

The best way to get started without stress is to make small changes one step at a time. Simply eating more vegetables and getting enough protein can make a big difference. Perfection isn’t necessary—consistency is. Simple meal planning and recipes that work for everyday life make it easier to get started.

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