21 Zero Calorie Foods For Fast Weight Loss

zero calorie foods for fast weigh loss

If you’re looking to lose weight, but need to eat more to stave off hunger, simply fill up at meal times using foods from our list of 21 Zero Calorie Foods For Fast Weight Loss. You can use them to snack on too in order to keep you on track without ruining your weight loss regime.

What do we actually mean by ‘Zero Calorie Foods’?

Well, it doesn’t strictly mean that the food contains no calories at all. What it does mean is that the amount of energy (calories) used up in eating and digesting the food, is greater than the amount of energy in the food item itself. Thus resulting in the term zero, or in some cases negative, calorie foods.

Caveat: Beware foods that have huge amounts of artificial sweetener in them, but marked as ‘zero calories’, or ‘Zero Sugar’. So please don’t think you can drink unlimited amounts of Pepsi Max or Diet Coke, as I’m afraid you can’t! Sorry.

All of the foods listed below have less than 55 calories per 100g (3.5 ounces)

21 Zero Calorie Foods For Fast Weight Loss


In general, fruits tend to have more calories than vegetables, due to their high natural sugar content. But fruits do provide a flavour that is pleasant to eat on its own, or that can be added to used to other food items for additional flavouring too.


Apples are an extremely healthy fruit, full of antioxidants, vitamins, minerals, and fibre. There is also a reasonable amount of pectin in apples, which has been shown to reduce food cravings and hunger.

Due to their ability to stave off hunger and cravings, apples also make a great snack to enjoy between meals. They can make all the difference when trying to lose weight as they can tide you over, and prevent you from succumbing to junk food in a moment of weakness.

Calories per 100g – 52


Oranges are well known for having a lot of Vitamin C, and also contain lots of the B vitamins, vitamin A, fibre, and calcium. In addition, oranges have also been linked to a reduction in the risk of heart disease due to the levels of potassium they contain.

There is some debate whether in eating an orange, you actually do burn up more calories than are in the fruit itself. However, they can definitely help keep down your total calorie intake for the day, and the health benefits are in no doubt whatsoever.

Calories per 100g – 47


The health benefits that can be gained from lemons are quite remarkable. They improve digestive function, assist weight loss, help to reduce wrinkles, improve your complexion, and have even been shown to have very good cancer fighting properties.

We’re not suggesting you sit munching on lemons all day, but by grating some of the zest from organic lemons over your food, or by adding to lemon juice to water, they can go a long way towards improving your overall health and in achieving your fast weight loss goals.

Calories per 100g – 29 

For more on the benefits of lemons, why not read our article: 14 Amazing Health Benefits of Drinking Lemon Water


Watermelon is one of the lowest calorie fruits that you can easily fill up on. Not only is watermelon a lovely naturally sweet food source, but it is also packed full of antioxidants and can even help boost your metabolism to speed up weight loss. Just make sure you don’t go overboard on the amount you eat.

Calories per 100g – 30

Note: Too much watermelon can have unpleasant side effects due to a build up of potassium and lycopene. This has been linked to digestive upset, heart palpitations, and liver inflammation. If you are a diabetic, it is advisable to consult your doctor before eating watermelon.


Most people know grapefruits as being a traditional diet food, long associated with breakfast. They are known to speed up your metabolism, contain a large number of vitamins, and antioxidants that are associated with anti-aging. Grapefruit is the last of the fruits on our list of 21 Zero Calorie Foods For Fast Weight Loss.

Calories per 100g – 42

Note: Grapefruit is known to interact with certain medications. Always consult your doctor before eating grapefruit, or drinking grapefruit juice, if you are on any medication whatsoever.


The cruciferous family of vegetables is full of super foods with powerful anti-cancer effects. They are rich in fibre and low in calories, a combination that will help you feel full and satisfied without overeating. Most cruciferous vegetables are also rich in vitamins and minerals such as folate and vitamin K. Dark green cruciferous vegetables are an excellent source of vitamins A and C. They’re also rich in phytonutrients — plant-based compounds that may help to lower inflammation and reduce the risk of developing cancer.


Broccoli is one of those foods classed as a super-food. It is a great source of vitamin C, K and D. The later is very good news as a vast proportion of the population is often deficient in vitamin D. It is also a good source of plant protein.

Broccoli has the ability to fight the risk of cancer, and is packed with phytonutrients and fibre, which help maintain a healthy digestive system. It can also aid in detoxifying the body and lowering inflammation. Broccoli is best if it is steamed or roasted. Boiling it too much can cause a lot of the nutrients to leak into the pan water.

Calories per 100g – 34


Without question, Kale is one of the most nutrient dense foods available, containing high amounts of protein, fibre, vitamins (A, K, C), minerals, phytonutrients, and antioxidants. It has been shown to help lower cholesterol too.

It does have a distinct flavour though, so if you are not that keen, try adding kale to green smoothies, or make kale chips in an assortment of different flavours.

Calories per 100g – 49


Cabbage is often overlooked, but has a whole host of health benefits associated with it. As well as vitamins K and C, cabbage is also rich in iodine, which is good for brain and nervous system function. It is a good source of beta-carotene, long associated with eye health and reducing chances of prostate cancer.

Cabbage soup is one of the best ways to eat cabbage. Eaten in this way it provides a nutritious, and filling meal, while still containing a lot less calories than other soups.

Calories per 100g – 25


Whilst not a leafy green cruciferous vegetable, cauliflower still contains good amounts of Vitamins K and C. It provides many antioxidants and anti-inflammatory benefits and helps the body’s cardiovascular and digestive systems.

Calories per 100g – 25

Brussel Sprouts

This is one of those love it or hate it foods. Regardless, brussel sprouts are packed with nutrients and clock in rather low on the calorie meter. They are also a cruciferous vegetable, so they provide similar benefits to eating broccoli, cabbage, and cauliflower.

Calories per 100g – 43



Due to the high water content of cucumbers, it is one thing you can eat loads of without worrying about it affecting your weight loss. Due to this, and the decent levels of fibre, cucumbers are also extremely good for the health of your digestive system. Add in the high levels of B vitamins and polyphenols, and you can see why cucumbers are considered a nutrient power food.

Calories per 100g – 16


Another “love em or hate em” food. Equal numbers of people say it has virtually no taste whatsoever, whilst others say it that if you add it to a salad, it overpowers the taste of everything else! Either way, it is a good source of Vitamin K and, like cucumber, has an incredibly high water content. Just make sure you avoid eating it with high calorie dips or spreads.

Calories per 100g – 16


Beetroot contains betalains, an antioxidant and anti-inflammatory that is only found in a few foods, and is responsible for giving beetroot its red colour. Betalains have also been shown to have some cancer prevention properties, particularly colon cancer. It is best to avoid pickled beetroot as this will have more calories. Try to stick with fresh beetroot that is steamed or boiled to get the greatest benefit.

Calories per 100g – 43 


Tomatoes are another amazing food that is very low in calories. They contain lycopene, as well as large amounts of Vitamin C and antioxidants. Lycopene has been repeatedly shown to help prevent cancer, and stave off heart disease.

The lycopene content of tomatoes increases when they are cooked. Not only that, but the longer they are cooked, the higher the lycopene level becomes. By way of example, if tomatoes are stewed for 2 minutes, 15 minutes and 30 minutes, the lycopene content increases by 6, 17 and 35 percent respectively.

Calories per 100g – 17

Sugar Snap Peas

They’re an especially good source of soluble fibre, which helps regulate blood sugar levels so that you can maintain a healthy weight. They also provide vitamins A, K, B6, and C, as well as many other minerals the body needs.

As the name implies, these are a sweet vegetable and are delicious to eat raw all by themselves, or chopped up and added into salads.

Calories per 100g – 42


Onions are part of the allium family of vegetables and herbs, which also includes chives, garlic, scallions, and leeks. It is believed the phytochemicals in onions, that scavenge free radicals, may help reduce risk of developing gastric ulcers, whilst the chromium and sulphur in onions assists in regulating and lowering blood sugar respectively.

Onions have also been shown to provide cardiovascular benefits, lower inflammation, and lower the risk of certain cancers.

Calories per 100g – 40


Carrots are low in calories, despite being considered sweet and high in natural sugars, and the beta-carotene they contain is known to protect eyesight. They are a low glycaemic food, so help manage blood glucose levels, and are a natural diuretic helping rid the body of excess sodium and retained water.

Calories per 100g – 41



Asparagus has significant health benefits and is a great choice because its fibrous nature means it will satisfy your hunger, whilst the number of calories are very low. Containing high amounts of vitamin K, foliate, copper, fibre, and vitamin B1, it is a nutrient-dense food with powerful health benefits.

Calories per 100g – 20

Zucchini (Courgette)

They are an abundant source of magnesium, fibre, and folate in your diet. They also contain lutein and zeaxanthin, which are powerful phytonutrients that fight off many forms of cancer.  It is also possible to buy, or use a spiralizer to make, Zucchini pasta, a very tasty gluten free alternative to traditional pasta.

Calories per 100g – 17


Nearly all mushrooms are going to be low in calories. Even the big, popular portabella mushroom is low in calories, having only 22 calories per 100g serving. Mushrooms are the only fruit or vegetable source of critical vitamin D. Like humans, mushrooms produce vitamin D when in sunlight. Exposing them to high levels of ultraviolet B just before going to market converts more of the plant sterol ergosterol into the so-called sunshine vitamin. Portobellos fortified with vitamin D are already being sold in the US, with a three-ounce (85-gram) serving providing about 400 IU of vitamin D.

Calories per 100g – 38


Whilst you may not feel like gorging on turnips, they are very low in calories. Combining with other vegetables on our list, adding them to a blender, and making soup is an excellent way to eat these low calories vegetables. They are an anti-inflammatory food, so they can help calm down the symptoms of several conditions caused by excessive inflammation in the body.

Calories per 100g – 28

If you’re looking to lose weight, but need to eat more to stave off hunger, simply fill up at meal times using foods from our list of 21 Zero Calorie Foods For Fast Weight Loss. You can use them to snack on too in order to keep you on track without ruining your weight loss regime.