Health Hacks: 20 Calorie Free Foods

Calorie free foods. It sounds like a gimmick but this concept is anything but new. 

These 20 foods all burn more calories by chewing and digesting them than they contain and whilst most people know celery is a zero calorie food - some of the foods on this list may surprise you! 

Of course, it is all about moderation. Remember that experts advise that these foods do only contain zero calories when eaten in moderation.

• Apples
  Added bonus: Apples are also packed full of vitamin C and vitamin A, antioxidants and dietary fibre and may reduce your risk of developing cancer, hypertension, diabetes and heart disease.
• Apricots
  Added bonus: Apricots have been seen to decrease the risk of stroke and heart attack and are an excellent source of vitamin C, potassium and dietary fibre.
• Cranberries
  Added bonus: The antioxidants and anti-inflammatory properties of cranberries have many health benefits, including increasing HDL (good) cholesterol levels, decreasing the risk of heart disease and urinary tract infections and more.
• Grapefruit
  Added bonus: Studies have found that pairing grapefruit with fatty foods reduces the calorie intake by around one fifth. 
• Lemons
  Added bonus: Starting your day with a glass of lemon water will help to alkalise your body, aid in digestion and support your immune system.
• Raspberries
  Added bonus: Raspberries are high in vitamin C and it has been said that they may even help to boost fertility.
• Strawberries
  Added bonus: By weight, strawberries contain more vitamin C than oranges and they have been said to improve digestion.
• Watermelon
  Added bonus: Watermelon has seen to stop the build up of bad cholesterol whilst also preventing heart attacks and weight gain.

• Asparagus
  Added bonus: Rich in antioxidants, asparagus is also a great source of vitamins A, C, E and K and can be eaten in a variety of ways.
• Beetroot
  Added bonus: Beetroot is a great source of iron and folate and it's even been suggested that beetroot can help to balance hormones and optimise fertility.
• Broccoli
  Added bonus: Broccoli is filled with vitamins, fibre and potassium and has even been found to reduce the risk of developing disease such as cancer.
• Cauliflower
  Added bonus: Just one serve of cauliflower will give you around 75% of your daily intake of Vitamin C.
• Celery
  Added bonus: The most commonly known "Zero Calorie Food", celery's low calorie count is due to the fact that it's made up of around 95% water.
• Cucumber
  Added bonus: Cucumber has been found to help flush toxins from the body - a natural detoxer!
• Green Beans
  Added bonus: Green beans are packed full of essential vitamins and nutrients as well as protein. 
• Kale
  Added bonus: Not just the food of the moment, kale contains plenty of essentials vitamins and nutrients.
• Leeks
  Added bonus: Full of flavour, leeks are an excellent source of vitamin K as well as manganese, B6, copper, vitamin C and iron.
• Lettuce
  Added bonus: Made up of mostly water, a lettuce leaf won't put a dent in your daily calorie intake.
• Onion
  Added bonus: A staple ingredient for most savoury recipes, onion eaten in moderation will burn more calories than you consume.
• Swede
  Added bonus: Also known as rutabaga, swedes contain beta carotene which help to support your immune system.