A-Z to Healthy Living

Nutrition Dictionary

  • Preservatives

    Preservatives are a type of food additive used to help prevent the deterioration of food by micro-organisms and preserve the food quality over an extended period of time.

  • Phytoestrogens

    Phytoestrogens are naturally occurring plant chemicals that are similar in structure to the human hormone oestrogen. The most common phytoestrogens are the isoflavones found in soy beans and lignans from linseed. Phytoestrogens behave similarly to oestrogen in the body and are thought to help relieve some menopausal symptoms and potentially have other health benefits.

  • Protein

    Protein is an essential nutrient that is used in the body for the growth and repair of cells and to provide energy. Protein is found in both plant and animal foods. Sources of protein include meat, eggs, dairy foods, nuts and seeds, dried beans and lentils.

  • Probiotics

    Probiotics are bacteria that help replenish the beneficial bacteria in the intestine. Common foods that contain probiotics are yogurt and fortified milk. Maintaining a balance of healthy bacteria in the intestine is beneficial for a healthy digestive system.

  • Polyphenols

    Polyphenols are naturally occurring plant chemicals, including flavonoids, catechins, isoflavonoids, lignans and anthocyanins. They are antioxidants that may help protect against oxidative damage and are most commonly found in certain fruits and vegetables, tea, coffee, soy, seeds, lentils and some dark chocolate.

  • Potassium

    Potassium is a mineral that plays an important role in our nervous system and is found in fruits, vegetables, milk, and meat.

  • Pectin

    Pectin occurs naturally in fruit and is often added to foods to thicken or stabilize them. Pectin is also used in throat lozenges because of its soothing properties

  • Phytosterols

    Phytosterols are compounds that have a structure like cholesterol and are found naturally in small amounts in foods such as vegetable oils, fruits, legumes and nuts. When consumed regularly in concentrated products such as phytosterol-containing margarines, they can help to lower cholesterol levels by reducing cholesterol absorption.

  • Prebiotic

    A prebiotic is a substance that promotes the growth of the beneficial bacteria in the intestine. Prebiotics work by providing food for the intestinal bacteria. Examples of prebiotics are inulin and fructooligosaccharides.

  • Phytochemical

    Phytochemical or phytonutrient in broad terms means any chemical or nutrient derived from a plant source. There are hundreds of phytochemicals in plants and it is believed many are yet to be discovered. Phytochemicals are thought to be beneficial for general health. Some commonly talked about phytochemicals are antioxidants such as flavonoids in fruit and vegetables, lycopene in tomatoes and polyphenols in coffee and cocoa beans. Plant sterols (see phytosterols) are another type of phytochemical.

  • Polyunsaturated Fat

    Polyunsaturated fats are ‘good fats’. There are two main types of polyunsaturated fats: Omega-3 and Omega-6. Omega-6 fatty acids are found in sunflower oil, certain margarines, nuts (e.g. walnuts), seeds (e.g. sesame, sunflower) and legumes. Omega-3 fatty acids are found in oily fish such as mackerel, sardines, salmon and tuna as well as canola and soybean oil.