How to Eat Healthy: 6 Steps to Get Started

Transitioning to a better diet doesn’t need to feel overwhelming or restrictive. Learning how to eat healthy is about making sustainable, everyday choices that nourish your body while still letting you enjoy food. By focusing on a wide range of whole foods, balanced meals and consistent habits, you can create a routine that lasts a lifetime. In this blog, we explore six steps you can take today to begin building healthy eating habits and improving your nutrition.

1. Get to Know What Healthy Eating Looks Like

Many medical experts recommend healthy eating patterns such as the Mediterranean and DASH diets, both of which include fruits, vegetables, whole grains, low- or no-fat dairy, fish, poultry, and unsaturated fats from sources like olive oil and nuts. In some ways, these plans are consistent with recent federal guidelines for healthy eating, but they also differ from those recommendations on some important points.

In early 2026, the U.S. Department of Agriculture released the Dietary Guidelines for Americans, 2025–2030. Visualized as an upside-down food pyramid, the new guidelines continue to emphasize fruits, vegetables and whole grains consistent with past recommendations. In other ways, though, the guidelines represent a major change from the old MyPlate framework, says Rachel Stahl Salzman, MS, RD, CDN, CDCES, a registered dietitian and certified diabetes education specialist with the Weill Cornell Medicine Division of Endocrinology.

“The dietary guidelines support the inclusion of full-fat dairy,” Salzman says. “This is a shift away from previous guidelines that have recommended lower-fat options.”

Many medical experts disagree with the guidelines’ emphasis on full-fat dairy, red meat and saturated fats, which can contribute to heart disease. To choose a healthy eating plan that best fits your needs, partner with a registered dietitian or your primary care provider.

2. Watch Your Portions

Managing how much food you put on your plate (portion size) is a key part of eating healthy. Portion size differs from serving size, which is the measure on the Nutrition Facts label that represents how much of a food people typically eat at once.

To keep portion sizes reasonable and prevent overeating, you can:

• Cook at home. That way, you can control precisely how much food goes on your plate, unlike at restaurants.
• Embrace leftovers. Instead of feeling pressured to eat everything you prepared at once, refrigerate or freeze what’s left to enjoy later.
• Downsize your dishes. Use small plates and bowls to help you choose smaller portions.
• Go slow. Eat deliberately to give yourself time to feel full. Reaching fullness can take 15 minutes or more, according to the National Institute of Diabetes and Digestive and Kidney Diseases.

“Eat mindfully, not mindlessly,” Salzman says. “That means avoiding distractions while eating, such as watching TV or scrolling on your phone. If your attention is diverted, you could lose track of your portion size and overeat without realizing it, especially if you’re eating straight from a box or bag.”

3. Understand Your Calorie Needs

Controlling portions can help you consume an appropriate amount of calories (energy from food). Take in more than you need, and your body will store the excess as fat, causing weight gain. However, if you eat fewer calories and burn more through exercise than you consume, you’ll lose weight.

Your calorie needs are unique. A calorie calculator can help you determine your ideal daily intake based on your age, weight, height, activity level and other factors. Need to reduce your daily consumption? Try:

• Cutting one high-calorie snack per day and replacing it with a low-calorie alternative (for example, nixing a bowl of ice cream in favor of fresh fruit)
• Reducing portion sizes
• Swapping high-calorie foods or beverages, such as whole milk, with a low-calorie version, such as skim milk

4. Prioritize Protein and Fiber

Protein and fiber benefit your health in numerous ways. You need protein for:

• Building muscles and organs
• Fighting germs
• Making and repairing cells
• Transporting vitamins, minerals and oxygen throughout your body

You can find protein in healthy foods from a variety of food groups. Good sources include beans, skinless chicken, salmon, nuts, seeds, and low- or no-fat dairy products, like yogurt and cottage cheese.

As for fiber, it can help:

• Aid blood sugar control
• Improve digestion
• Manage weight
• Reduce the risk of heart disease

Healthy sources of fiber include fruits, vegetables, brown rice, beans and lentils.

5. Reduce Sodium and Added Sugars

Consuming too much sodium and added sugar can put your health at risk over the long term. An excessive sodium intake makes you more likely to develop high blood pressure or have a heart attack. Too much added sugar puts you at risk for heart disease, obesity and Type 2 diabetes.

One of the most straightforward ways to limit sodium and added sugars in your diet is to avoid processed foods as much as possible. They account for more than 70 percent of Americans’ sodium intake, according to the Centers for Disease Control and Prevention, and are also a major source of added sugars. You can also:

• Eat fruit instead of sugary snacks.
• Substitute water for sodas.
• Use herbs and spices for flavoring instead of salt.

6. Grocery Shop With a Plan

“Before heading to the grocery store, take stock of the items in your refrigerator and pantry to see what you have on hand for preparing healthy meals,” Salzman says. “Don’t underestimate the power of a grocery list. Making a list of the foods you need can help you stay focused in the store and reduce the chance of buying unhealthy snacks on impulse.”

As you make your way through the store, try to do most of your shopping on the outer aisles, where you’ll typically find fresh produce, meat and dairy products. Processed foods tend to be concentrated in the inner aisles.

Key Takeaways: Healthy Eating Habits Start With Simple Actions

With healthy eating, small, consistent changes lead to long-term success. Remember to:

1. Base your meals on whole grains, fruits, vegetables and lean proteins.
2. Manage intake by practicing portion control, understanding your unique calorie needs, and prioritizing protein and fiber.
3. Limit processed foods in favor of whole ones and always shop with a list.

Looking to partner with an expert to improve your nutrition? Find a doctor at Weill Cornell Medicine.