Carotenoids...

Carotenoids

Carotenoids are a large group of yellow, orange and red plant pigments which help to protect plants from sunlight. They work in a similar way in our bodies, acting as powerful antioxidants which help neutralize free radicals caused by sunlight and other environmental factors. Free radicals are by-products of chemical reactions that take place in the body. They cause damage by interacting with cell membranes, proteins and cell DNA. The 6 most common carotenoids are: betacarotene, alphacarotene, cryptoxanthin, zeaxanthin, lycopene and lutein. Because free radicals are one of the main mechanisms of ageing, and carotenoids help defend against free radicals, carotenoids are very important to help maintain health. They also help maintain a healthy immune system, especially cellular immunity where free radicals may alter cell DNA, causing cells to change. Caretenoids are also important for the communication between cells which helps them regulate growth. Normal cells grow and multiply at a controlled rate.

Between 500 and 600 carotenoids have been identified, although only 20 or so are found in the modern diet. Generally, the brighter the colour of a fruit or vegetable, the more carotenoids it is likely to contain. Good sources of carotenoids include tomatoes, watermelon, spinach, carrots, peas, broccoli, oranges, pumpkin, peaches, apricots, cantaloupe, red peppers and mangos

There is no recommended daily allowance for carotenoids, but they are one of the reasons why fruit and vegetables are so good for you, and why experts agree we should try to eat as many fruit and vegetables as possible.