Prevention of chronic diseases

Vegetables are important sources of vitamins, minerals, dietary fibre, water, and many protective plant compounds. Their nutrients support normal body functions, digestion, and immune and heart health. Different vegetables provide different nutrients, so eating a colourful variety is better than relying on only one type.

Whole grains retain the bran, germ, and endosperm, whereas refining removes much of the bran and germ. Consequently, whole grains usually provide more fibre and several micronutrients. Fibre supports bowel function, increases fullness, and can slow digestion and the rise in blood glucose compared with many refined choices.

Frequent excess sweets provide added sugars and calories with little fibre or nutritional variety. If the extra energy is not used, it can contribute to weight gain. Over time, an overall high-sugar, energy-dense dietary pattern may worsen metabolic health and increase the risk of type 2 diabetes, although individual risk has many causes.

Regular movement, such as walking, climbing stairs, stretching, or taking active breaks, interrupts long periods of sitting and reduces sedentary time. It supports circulation, muscle function, energy balance, and general fitness. Movement complements rather than replaces a balanced diet and sufficient sleep.

Low-fat milk can provide important nutrients such as protein, calcium, phosphorus, and often vitamin D, while supplying less fat than whole milk. It may be useful when a person needs to limit total or saturated fat, provided the product is unsweetened and fits the person’s nutritional needs and medical advice.

Regular checkups can identify risk factors such as raised blood pressure, high blood glucose, abnormal blood lipids, or early symptoms before complications develop. Early detection allows timely counselling, lifestyle changes, monitoring, or treatment. The exact tests and frequency should depend on age, risk, symptoms, and professional guidance.

Skipping breakfast does not automatically cause disease, but for some people it can increase hunger and make overeating or poor food choices later more likely. A regular, balanced breakfast can contribute to a stable meal pattern and provide useful nutrients. Overall diet quality, total intake, activity, sleep, and individual needs remain important.

Plain water contains no sugar added during preparation and is a healthy way to maintain hydration without extra calories. Sweet sodas, packaged drinks, and tea made with excess sugar provide added sugars. Choosing water instead of sugary beverages can help reduce total sugar and energy intake and support dental and metabolic health.

A low-salt eating pattern can help control blood pressure because it reduces sodium intake. Excess sodium may increase fluid retention and raise blood pressure, especially in salt-sensitive people. Pickles, salty chips, and packaged savoury snacks often contain much sodium, so they should be limited as part of an overall balanced dietary pattern.

Chronic disease prevention works best as a whole lifestyle approach. A balanced diet should be combined with regular physical activity, sufficient sleep, avoidance of tobacco, and appropriate health checkups. Activity supports weight, blood pressure, glucose, and heart health, while checkups can identify risks early; therefore, option A is correct.

Different colours in vegetables often reflect different pigments and phytochemicals, while vegetables also supply fibre, vitamins, minerals, and water. Eating a varied selection improves nutrient diversity and may support heart, digestive, and metabolic health. Vegetables are not merely sources of sugar and cannot replace all other food groups.

Chronic disease prevention is strongest when several healthy practices are combined: a balanced, varied diet; regular physical activity; adequate sleep; avoidance of tobacco; and appropriate health checkups. No single medicine or food can replace this approach for everyone. Therefore, option C represents the most complete preventive strategy.

Small actions such as choosing water, adding vegetables, walking regularly, limiting excess salt and sugar, sleeping adequately, and avoiding tobacco can accumulate over time. Consistency improves the chance that healthy behaviours become routine and may lower long-term risk, although no habit guarantees that disease will never occur.

A very large meal close to bedtime may cause fullness, reflux, indigestion, or discomfort and can interfere with sleep in some people. A regular eating schedule, moderate portions, and allowing time between dinner and sleep can support comfort and routine. Individual tolerance varies, so the advice is not an absolute rule for every person.

Reading the nutrition label helps identify added sugar in packaged foods. Sugar may appear under names such as sucrose, glucose syrup, fructose or maltose. Checking serving size and total sugars supports healthier choices and helps reduce excess energy intake, obesity and chronic-disease risk.

A properly washed salad can add dietary fibre, vitamins, minerals and water to a meal without supplying excessive energy. Fibre supports bowel function and satiety, while micronutrients support body processes. Raw vegetables should be cleaned safely before eating.

Self-monitoring means regularly observing and recording personal health-related habits or measurements, such as body weight, food intake, physical activity, or blood pressure. Tracking weight and food habits can reveal unhealthy patterns early and encourage timely changes, helping reduce the risk of obesity, diabetes, hypertension, and other chronic diseases. The other choices promote harmful or inactive behaviour.

Replacing a sweet drink with plain water or an unsweetened beverage reduces added-sugar and calorie intake without removing the meal’s nutrients. Frequent sugary drinks can contribute to excess energy intake, weight gain, dental caries and metabolic risk. The better choice is substitution, not adding another drink; water is generally suitable unless a health professional has prescribed a special fluid restriction.

Blood-glucose and blood-pressure measurements can reveal risk or disease at an early stage, sometimes before noticeable symptoms appear. Early identification allows timely counselling, lifestyle changes, repeat testing and medical care, which can reduce complications. These checks do not replace healthy eating or activity, but they strengthen screening and early intervention as part of chronic disease prevention. Therefore, A is correct.

Walking and choosing stairs increase daily energy expenditure and reduce sedentary time. When performed regularly and according to a person’s health status, physical activity supports healthy body weight, cardiovascular fitness, insulin sensitivity, and blood-pressure control. The remaining choices are harmful behaviours and therefore cannot represent a prevention principle.

Water supports hydration without adding sugar or meaningful calories. Regular consumption of sugar-sweetened beverages can increase total energy and added-sugar intake, contributing to obesity, dental caries, and type 2 diabetes risk. Sweet drinks may still provide some fluid, so the issue is not that they cannot hydrate; their concern is their sugar and calorie content.

Diet quality is important, but prevention is more effective when it is combined with regular physical activity. Activity helps maintain muscle and cardiovascular fitness, supports energy balance and insulin sensitivity, and can assist blood-pressure and weight management. Remaining sedentary leaves an important modifiable risk factor unaddressed. The other choices are harmful, not preventive.

Healthy eating does not require expensive branded products. Local pulses can provide affordable protein and fibre; whole grains supply complex carbohydrates and nutrients; and seasonal vegetables are often cheaper and fresher. Planning meals, comparing prices, using available local foods, and limiting highly processed snacks can support nutrition within a budget.

Millets can contribute complex carbohydrate, dietary fibre and several minerals, depending on the variety and preparation. Locally available millets may also improve dietary diversity, affordability and cultural acceptability. They are not automatically a complete diet, so they should be eaten in suitable portions with pulses, vegetables and other foods in a balanced eating pattern.

Pickles and papads are often prepared, preserved, or processed with considerable salt, making them possible sources of high sodium. Excess sodium can promote fluid retention and raise blood pressure in susceptible people. Limiting portions supports hypertension prevention. This does not mean every product has identical sodium content, so labels and preparation methods should also be considered.