Intermittent fasting is not only about when you eat. What you eat during intermittent fasting matters just as much for weight loss, energy, and overall health. By focusing on nutrient-dense whole foods during your eating window and the right zero-calorie drinks during your fasting window, you can make the most of your efforts and feel better while you do it.
Below, you will find a simple guide to what to eat during intermittent fasting, what to skip, and how to build meals that keep you full instead of just watching the clock until your next snack.
Understand your intermittent fasting schedule
Before you decide what to put on your plate, it helps to be clear on your fasting pattern. Many people follow a time-restricted schedule like 16/8, where you fast for 16 hours and eat during an 8 hour window.
Popular 16/8 windows include:
- 12 p.m. to 8 p.m., so you eat lunch, dinner, and a snack
- 9 a.m. to 5 p.m., so you eat breakfast, lunch, and an early dinner (Healthline)
Regardless of the exact timing, your approach is the same. During the eating window you focus on balanced, minimally processed meals. During the fasting window you stick to non-caloric drinks.
What to drink during fasting windows
When you are not eating, the goal is to stay hydrated without taking in calories that could break your fast.
Drinks that usually fit a fast
Most experts agree that the following are allowed during fasting periods:
- Plain water, still or sparkling
- Black coffee without sugar, cream, or flavored syrups (Johns Hopkins Medicine)
- Unsweetened tea, such as green, black, or herbal tea (Healthline)
These zero-calorie beverages help you stay hydrated and may even help curb appetite so your fasting hours feel more manageable (Johns Hopkins Medicine).
Some research from ZOE suggests that a small splash of milk in tea or coffee usually does not cause a blood sugar spike for most people, although any calories technically break a strict fast (ZOE). If you are fasting for specific medical or religious reasons, ask your doctor what is appropriate for you.
Drinks to avoid while fasting
To keep your fast intact, skip:
- Soda and energy drinks
- Fruit juice or smoothies
- Coffee or tea with sugar, flavored syrups, or cream
- Milk and sweetened plant-based milks
These drinks contain calories and often added sugar that can raise blood sugar and make it harder to stick to your fasting routine (iHerb.com, Healthline).
Build balanced meals for your eating window
Once your eating window opens, your focus shifts to nourishment. The quality of what you eat during intermittent fasting is just as important as the schedule itself (University of Michigan School of Public Health).
A practical formula is:
Protein + Colorful vegetables + Fruit + Smart carbs + Healthy fats
Nutrition experts recommend filling your plate with minimally processed foods and a balance of macronutrients along with vitamins and minerals so you support your metabolism and overall health (WTOP).
Make lean protein a priority
Protein helps you stay full, maintain muscle, and avoid energy crashes between meals. It also supports blood sugar balance and immune health (iHerb.com).
Good lean protein choices include:
- Skinless chicken breast or turkey
- Fish like salmon, sardines, or white fish
- Shellfish such as shrimp or mussels
- Beans, peas, and lentils
- Tofu and tempeh
- Plain Greek yogurt, kefir, cottage cheese, and other cultured dairy (WTOP, U.S. News & World Report)
Cultured protein foods such as yogurt and kefir offer probiotics that support gut health, which can be especially helpful when you are changing your eating pattern (iHerb.com).
Try to include a solid source of protein in every meal to keep you satisfied through both your eating and fasting windows.
Fill half your plate with vegetables
Vegetables provide fiber, vitamins, minerals, and phytonutrients that support heart health, blood sugar control, and long-term disease prevention (U.S. News & World Report). They also add volume to your meals so you feel full without relying on ultra-processed foods.
Leafy greens and colorful vegetables are especially helpful, such as:
- Kale, spinach, chard, collard greens, and arugula
- Cabbage and other cruciferous vegetables
- Peppers, tomatoes, carrots, and beets
The Dietary Guidelines for Americans recommend about 2.5 cups of vegetables per day on a 2,000 calorie diet (WTOP). You can spread that across your meals or eat more, depending on your needs and appetite.
Enjoy fruit for natural sweetness and fiber
Fruit can fit easily into what you eat during intermittent fasting, especially when you choose whole fruits instead of juices. Whole fruits offer fiber along with vitamins, minerals, and plant compounds that support your health.
Helpful choices include:
- Apples, pears, and peaches
- Berries such as blueberries, blackberries, and cherries
- Oranges and other citrus
- Plums, apricots, and watermelon
The Dietary Guidelines suggest about 2 cups of fruit daily for most adults (WTOP). You can add fruit to yogurt, oatmeal, salads, or enjoy it as a simple dessert.
Choose smart carbohydrates
Carbohydrates are not off limits during intermittent fasting. The key is to focus on complex, unrefined sources that digest more slowly, provide fiber, and keep your blood sugar steadier.
Smart carb options include:
- Oats and other whole grains
- Brown rice, quinoa, and barley
- Whole grain bread or tortillas
- Beans and lentils, which count as both carbs and protein
Nutrition experts often point to the Mediterranean diet, which is rich in whole grains and unrefined carbohydrates, as a helpful blueprint for what to eat during intermittent fasting (Johns Hopkins Medicine).
Include healthy fats for fullness
Healthy fats support cell health, hormone production, and the absorption of fat-soluble vitamins like A, D, and E. They also add flavor and help you feel satisfied for longer (iHerb.com).
Helpful sources of healthy fats include:
- Olive oil, canola oil, and sunflower oil
- Avocado and olives
- Nuts such as almonds, walnuts, and pistachios
- Seeds like chia, flax, and pumpkin seeds
- Fatty fish like salmon and sardines, which also provide omega-3s
For heart health, ZOE recommends emphasizing vegetable oils, whole fruits and vegetables, whole grains, omega-3 rich fish, beans, legumes, and herbs and spices instead of salt (ZOE).
What to avoid during intermittent fasting
What you leave out of your diet can be just as important as what you add in. Certain foods can make you hungrier, increase cravings, and work against your goals.
Highly processed snacks and sweets
Try to limit or avoid:
- Snack chips and packaged crackers
- Microwave popcorn with added butter and salt
- Cookies, candy, cakes, and pastries
- Sugary cereals and cereal bars
These foods tend to be rich in added sugars, unhealthy fats, and sodium, and they offer little fiber or protein. They digest quickly, which can leave you feeling hungrier shortly after eating, especially after a long fast (WTOP, U.S. News & World Report).
Sugary drinks and “liquid calories”
Even during your eating window, it helps to limit:
- Soda and sweetened iced tea
- Fruit juice and juice drinks
- Specialty coffee drinks with syrups and whipped cream
These beverages provide a lot of calories without much satisfaction. Because they are quickly absorbed, they can trigger blood sugar spikes and crashes that make fasting harder later on (U.S. News & World Report, Healthline).
Deep-fried and ultra-processed meals
Health experts advise limiting ultra-processed foods and deep-fried items because they can cancel out many of the benefits of intermittent fasting for weight and health (Healthline).
Try to keep the following occasional instead of daily:
- Fast food meals and deep-fried items
- Most frozen dinners with long ingredient lists
- Processed meats like bacon and sausage, which are high in saturated fat and LDL-raising cholesterol (U.S. News & World Report)
Johns Hopkins notes that “eating normally” during intermittent fasting does not mean large portions of fried food or junk food. Those habits do not support weight loss or better health (Johns Hopkins Medicine).
Sample meal ideas for your eating window
It can feel easier to follow your plan when you have a few simple meal templates ready to go. Use these as inspiration and adapt them to your tastes and dietary needs.
Breakfast or first meal ideas
If your eating window opens earlier in the day, a balanced first meal can help steady your blood sugar and energy.
Try:
-
Egg and veggie breakfast bowl
-
Scrambled or poached eggs
-
Sautéed spinach and cherry tomatoes
-
Sliced avocado and a drizzle of olive oil
This type of bowl provides high-quality protein, healthy fats, and fiber to stabilize blood sugar and replenish nutrients after your fast (Zero Longevity). -
Greek yogurt and berry bowl
-
Plain Greek yogurt or kefir
-
Mixed berries
-
Chia seeds or chopped nuts
This combination offers protein, probiotics, fiber, and healthy fats to keep you full.
Lunch and dinner ideas
Your main meals can follow the same pattern of protein, vegetables, smart carbs, and healthy fats.
Options include:
-
Salmon and quinoa salad
-
Baked or grilled salmon
-
Cooked quinoa
-
Mixed leafy greens and chopped vegetables
-
Olive oil and lemon dressing
Salmon and quinoa together offer a balanced blend of protein, complex carbs, healthy fats, and fiber. This supports sustained energy, fullness, and nutrient absorption, which is ideal after a fast (Zero Longevity). -
Mediterranean style grain bowl
-
Brown rice or farro
-
Grilled chicken or chickpeas
-
Cucumber, tomato, olives, and greens
-
A spoonful of hummus and a drizzle of olive oil
This bowl mirrors the Mediterranean diet that many experts recommend for intermittent fasting, with whole grains, vegetables, healthy fats, and lean protein (Johns Hopkins Medicine). -
Bean and veggie chili
-
Mixed beans, tomatoes, and peppers
-
Onions, garlic, and spices
-
A side of brown rice or whole grain bread
This is a plant-based meal that is high in fiber and protein to keep you satisfied.
Snack ideas between meals
Balanced snacks can help you avoid overeating at the end of your eating window. Aim to combine protein, fiber, and healthy fats to curb cravings naturally (Zero Longevity).
You might like:
- Apple slices with peanut or almond butter
- Carrot sticks and hummus
- A small handful of nuts and a piece of fruit
- Cottage cheese with cucumber and cherry tomatoes
Tips to avoid overeating in your eating window
If you arrive at your eating window very hungry, it can be tempting to overdo it. A bit of planning can help you feel full and still support your goals.
Try these strategies:
-
Break your fast gently
Start with a balanced meal that includes protein, fiber, and healthy fats so you are less likely to binge on high-sugar foods. -
Plan your meals ahead
Decide roughly what you will eat before your window opens. Pre-planned, balanced meals help reduce impulsive choices and are naturally more satiating (Zero Longevity). -
Eat slowly and pay attention
Give yourself time to notice when you feel satisfied instead of stuffed. Intermittent fasting works best long term when it feels sustainable, not like punishment. -
Stay hydrated
Keep sipping water throughout the day. Sometimes thirst can feel like hunger, especially in between meals (Healthline).
Support overall health with anti-inflammatory foods
If you are using intermittent fasting to support long-term health, include foods that help lower inflammation and support gut and heart health.
Research from ZOE suggests that you may benefit from emphasizing (ZOE):
- High fiber foods like whole grains, beans, fruits, and vegetables
- Omega-3 rich foods such as fatty fish, walnuts, and flaxseeds
- Nuts and seeds for healthy fats and antioxidants
- Colorful fruits and vegetables that are rich in polyphenols and plant compounds
These choices can help support stable blood sugar, healthier cholesterol levels, and better gut health over time.
Start intermittent fasting safely
If you are new to intermittent fasting, easing in is usually more comfortable than jumping into long fasts right away.
Guidance from Healthline suggests you might (Healthline):
- Begin gradually, such as trying a 16/8 pattern 1 to 2 days per week
- Pay attention to your hunger, mood, and energy levels
- Adjust your eating window if you consistently feel unwell or overly fatigued
It is important to talk with your doctor before starting intermittent fasting if you have underlying health conditions, take medications, are pregnant or nursing, or have a history of eating disorders.
Key takeaways
To make intermittent fasting work for you, focus on both timing and quality.
- During fasting windows, drink water, black coffee, and unsweetened tea so you stay hydrated without breaking your fast.
- During eating windows, build meals around lean protein, plenty of vegetables, whole fruits, smart carbs, and healthy fats.
- Limit ultra-processed foods, sugary drinks, and deep-fried meals that can undermine your progress and increase cravings.
- Plan simple, balanced meals and snacks so you feel full and energized rather than restricted.
You do not have to change everything at once. Start by improving one meal in your eating window, such as swapping a sugary cereal for a protein and veggie rich breakfast bowl. Notice how you feel, then keep building from there.
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