Balanced diet and Recommended Dietary Allowances

Recommended Dietary Allowances, or RDAs, provide reference amounts of nutrients generally sufficient for healthy people in particular age and sex groups. They help in planning and evaluating diets, but they are not an exact prescription for every individual or a direct treatment plan for disease. Thus, option A is correct.

Energy is needed for body functions, physical activity, growth and maintenance of tissues. When energy intake remains lower than the body’s requirement, stored body reserves may be used. This can gradually lead to weight loss, tiredness, reduced stamina and weakness. Therefore, weight loss and weakness are the relevant effects among the given choices.

Nutrient density refers to the amount of essential nutrients supplied by a food in relation to the energy or quantity it provides. A nutrient-dense food supplies vitamins, minerals, protein or other useful nutrients without excessive calories. For example, vegetables, pulses and milk can provide substantial nutrients in a moderate quantity. Therefore, option C is correct.

Nutrients such as protein, iron, iodine, vitamin A and other vitamins and minerals support growth, blood formation, immunity, metabolism and tissue repair. If the diet lacks these nutrients for a prolonged period, the person may develop weakness, poor growth, anaemia or other deficiency disorders. Therefore, weakness and deficiency diseases are the possible effects described by option A.

Excess sugar supplies additional energy without providing a comparable amount of essential nutrients. If this energy is not used through normal activity, the body may store it as fat, increasing the risk of weight gain and, over time, obesity and related health problems. Therefore, sugar should be consumed in moderation.

Seasonal fruits and vegetables are often harvested closer to the time of purchase, so they may be fresher, more affordable, and easier to obtain. They supply fibre, vitamins, minerals, water, and protective plant compounds. Including varied local produce improves diet quality, although it does not replace prescribed medical treatment.

A balanced meal must be planned according to the individual’s age, sex, activity level, health condition, food preferences and nutritional requirements. These factors determine the amount and variety of foods needed. Appearance and colour may improve acceptability, but they cannot replace the person’s nutritional needs as the main basis of planning.

Portion control means choosing and eating an appropriate amount of a food at one time. The suitable portion depends on age, activity, health needs and the rest of the diet. It can help prevent excessive energy intake while supporting a balanced pattern. Therefore option D is correct.

Energy balance occurs when energy supplied by food and drinks is approximately equal to energy used for basal metabolism, movement, physical activity and other body functions over time. A persistent surplus may promote weight gain, while a persistent deficit may cause weight loss. Thus option A is correct.

Whole grains and fruits contain dietary fibre, and vegetables, pulses, nuts and seeds are also useful sources. Fibre supports normal bowel movement, may help satiety and contributes to a healthy dietary pattern. Ghee is mainly fat, while refined sugar and salt contain essentially no fibre. Therefore option A is correct.

A balanced and varied diet supplies energy, protein, vitamins, minerals, fibre and other nutrients in suitable amounts. Including diverse food groups and using fortified foods when appropriate can reduce deficiency risk. Smell, sweets or skipping meals cannot meet the body’s nutrient requirements. Hence option B is correct.

Using locally available foods can make meals more affordable, practical and culturally acceptable. A sound plan combines different food groups, seasonal produce, pulses, grains and other nutritious choices while considering budget, family needs and preparation facilities. Cost alone does not guarantee quality, so option D is correct.

Excess sugar supplies additional calories but very few essential nutrients. If sugary foods and drinks are taken frequently, total energy intake may rise beyond the body’s needs, increasing the risk of weight gain and dental caries. Therefore, sugar should be consumed in moderation as part of a balanced diet.

Option C is correct because a healthy food choice should be based on reliable nutrition information, personal dietary needs, and food safety. A nutrition label helps compare energy, protein, fat, sugar, sodium, and serving size. Hygiene reduces the risk of contamination and food-borne illness, while considering individual needs supports a balanced diet. Taste, advertising, or colour alone cannot show whether a food is nutritious or safe.

Salt contains sodium, and regularly consuming too much sodium can contribute to raised blood pressure in susceptible people. High blood pressure increases the risk of cardiovascular and kidney problems. Limiting added salt and choosing fresh, less-processed foods supports a healthier balanced diet.

Different food groups provide different nutrients. Cereals supply energy, pulses and other protein foods support growth and repair, while fruits and vegetables provide vitamins, minerals, fibre, and protective substances. Including variety improves dietary balance and reduces the chance of missing important nutrients.

Physical work increases muscle activity and energy expenditure. A person doing heavy labour may therefore need more energy, fluids, and sometimes additional nutrients than someone with a sedentary routine. Diet should be adjusted according to activity level, while maintaining balance and avoiding unnecessary excess.

Children continuously build new muscles, bones, organs, enzymes, and other tissues. Protein supplies amino acids required for this growth, as well as for repair and maintenance. Good sources include pulses, milk, eggs, fish, meat, soy, and nuts. Adequate protein should be part of a varied diet.

Adolescence is marked by a growth spurt, hormonal changes, increased bone and muscle development, and often greater physical activity. These changes raise the need for energy, protein, iron, calcium, and other nutrients. A varied balanced diet is therefore especially important during this stage.

Water is essential for transporting nutrients, regulating body temperature, removing waste, lubricating joints, supporting digestion, and maintaining blood and fluid balance. Although it provides no calories, it is indispensable for life. Daily needs vary with age, climate, activity, illness, and other foods consumed.

When food intake repeatedly exceeds the body’s energy expenditure, the surplus energy is stored, mainly as body fat. Over time this positive energy balance can contribute to overweight and obesity and may increase the risk of metabolic disease. Portion awareness and a balanced, varied diet help maintain healthy energy balance.

Eating too little may fail to provide enough calories, protein, vitamins, minerals, and other nutrients. This can cause tiredness, weakness, poor concentration, weight loss, reduced immunity, and nutrient deficiencies. The effects depend on how long and how severely intake is inadequate, so persistent problems require professional assessment.

A good nutrition habit is to eat a variety of foods in suitable amounts and include different food groups. This helps provide energy, protein, vitamins, minerals, fibre, and water. Regular meals, safe preparation, moderation of sugar and salt, and attention to hunger and fullness further support healthy eating.

A healthy breakfast can combine a cereal or other whole-grain food for energy and fibre, a protein source for satiety and tissue maintenance, and fruit for vitamins, minerals, and additional fibre. Such variety makes the meal more balanced than a breakfast based only on fried foods or sugary drinks.

Sugary drinks often contain substantial added sugar and calories but little protein, fibre, or micronutrient value. Drinking them frequently between meals can raise total daily energy intake without creating much fullness, increasing the risk of weight gain and dental caries. Water or unsweetened drinks are generally better choices.