Some Hidden Facts About Fruits And Vegetables

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resh Vegetables and fruits are rich sources of micronutrients and macronutrients. The micronutrients present are minerals (like iron and calcium) and vitamins (like vitamin C, folic acid, B complex vitamins and carotenoids) whereas, the macronutrients present are complex carbohydrates/fiber. They contain abundant amounts of iron, calcium, vitamin C, folic acid, carotenoids (precursors of vitamin A) and phytochemicals. Some vegetables and fruits provide very low calories whereas some others such as potato, sweet potato, tapioca and yam as well as fruits like banana are rich in starch which provides energy in good amount. Therefore, vegetables and fruits can be used to increase or decrease calories in our diet.

Green leafy vegetables, other vegetables and fresh fruits are treasure trove of several minerals and vitamins and hence, protect from diseases.

Let’s see exactly what function do these nutrients perform in our body?

IRON

Iron is an essential element necessary for the formation of haemoglobin, the red pigment present in the red cells of blood. Haemoglobin plays an important role in the transport of oxygen to the tissues. Iron is available in plenty in green leafy vegetables. But the absorption of iron is limited. Vitamin C rich foods must be consumed daily to improve iron absorption.

VITAMIN A

This fat-soluble vitamin is necessary for clear vision in dim light, and for maintaining the integrity of epithelial tissues. In vitamin A deficiency, the white of the eye (conjunctiva) loses its luster and becomes dry. Carotenoids are plentiful in fruits and vegetables that are green or deep yellow/orange in colour, such as green leafy vegetables, carrots, tomatoes, sweet potatoes, papaya, mango etc.

 VITAMIN C

Vitamin C is an essential nutrient required for healthy bones and teeth. It also promotes iron absorption. Vitamin C is abundantly available in fresh amla, citrus fruits, guava, banana and certain vegetables such as tomatoes. However, it is very susceptible to destruction by atmospheric oxidation.

 FOLIC ACID

Folic acid is a haemopoietic vitamin essential for multiplication and maturation of red cells in our body. Its deficiency leads to megaloblastic anemia. Folic acid intake during pregnancy protects the foetus from developing certain congenital defects. Green leafy vegetables, legumes, nuts and liver are good sources of folates.

 PHYTONUTRIENTS

Vegetables provide phytochemicals and considerable health significance to the human body. Among these, dietary fiber, antioxidants and other bio-active constituents require special mention. These special factors are required for delaying ageing and preventing the processes which lead to diseases such as cataract, cardio-vascular diseases, diabetes and cancer.

 DIETARY FIBER

Dietary fiber delays the intestinal transit of the food consumed. Dietary fiber is important for proper bowel function, to reduce chronic constipation, diverticular disease, haemorrhoids coronary heart diseases, diabetes and obesity.

ANTIOXIDANTS

Antioxidants restrict the damage that reactive oxygen free radicals can cause to the cell and cellular components. They are of primary biological value in giving protection from certain diseases. Raw and fresh vegetables like green leafy vegetables, carrots, fresh fruits including citrus and tomatoes have been identified as good sources of antioxidants (free radical scavengers). The nutrients vitamin C and carotenoids that are present in these vegetables are also potential antioxidants. Different colored vegetable provide different antioxidants like orange colored provide beta-carotene, red provide lycopene, deep red provide betalines, blue and purple provide anthocynins.

How much should we consume?

The Expert Committee of the Indian Council of Medical Research, taking into consideration the nutrient requirements, has recommended that every individual should consume at least 300 g of vegetables (GLV : 50 g; Other vegetables : 200 g; Roots & Tubers : 50 g) in a day. In addition, fresh fruits (100 g), should be consumed regularly. Since requirements of iron and folic acid are higher for pregnant women they should consume 100 g of leafy vegetables daily. High calorie vegetables and fruits to be restricted for overweight/obese subjects.

We should consume fresh, locally available and preferably seasonal vegetables and fruits. They have more micro nutrients and are tasty. However, no single fruit or vegetable provides all the nutrients you need. The key lies in eating a variety of them and with different colors. Include commonly consumed leafy greens, tomatoes and other vegetables, apart from those which are yellow, orange, red, deep red, purple colored citrus fruits, being vitamin C-rich enrich the diets significantly. Along with these, try selecting some new vegetables and fruits to your meals.

  

POINTS TO REMEMBER

Include green leafy vegetables in daily diet.

 Eat as much of other vegetables as possible daily.

 Eat vegetables/ fruits in all your meals in various forms (curry, soups, mixed with curd, added to pulse preparations and rice).

 Consume raw and fresh vegetables as salads.

 Grow the family's requirements of vegetables in the kitchen garden if possible.

 Green leafy vegetables, when properly cleaned and cooked are safe even for infants.

 Let different varieties of vegetables and fruits add color to your plate and vitality to your life.

 Beta-carotene rich foods like dark green, yellow and orange colored vegetables and fruits (GLVs, carrots, papaya and mangoes) protect from vitamin A deficiency.