Diet therapy

The central management step in a confirmed food allergy is to identify the causative food and avoid it in meals and packaged products. Careful label reading, prevention of cross-contact, and professional guidance are also important. Avoiding every food is unnecessary and may cause malnutrition, while deliberate exposure can provoke a serious reaction; therefore D is correct.

Oral nutritional supplements may be prescribed when a person cannot obtain sufficient energy, protein, vitamins, or minerals from ordinary food alone. They are used as an addition to the regular diet, especially when intake is inadequate because of illness, poor appetite, increased requirements, or difficulty eating. They should be selected and monitored by a qualified health professional; they do not automatically replace medicines or all normal meals.

Reduced taste can lower appetite and food acceptance, so safe flavour enhancement, varied textures, attractive presentation, suitable temperature, herbs, or permitted seasonings may help. However, additions must respect the patient’s disease, allergies, sodium or sugar restrictions, and oral condition. Very spicy foods are not automatically appropriate, and nutritious foods should not be stopped; hence A is correct.

Lactose intolerance varies in severity, and many people can tolerate a limited amount of lactose, especially when taken with meals. Identifying individual tolerance may allow suitable milk products, such as yoghurt or lactose-free alternatives, while preserving calcium and protein intake. Complete dairy avoidance is not automatically necessary unless medically indicated.

A low-energy diet should reduce excess calories without causing deficiencies of protein, vitamins, minerals, fibre, or other essential nutrients. Choosing nutrient-dense foods, suitable portions, vegetables, fruits, whole or minimally processed foods, and adequate protein helps preserve nutritional quality. The plan should be individualized and monitored, especially for children, older adults, pregnancy, illness, or rapid weight loss.

Vomiting and discomfort after eating may indicate poor tolerance, food intolerance, an adverse reaction, or worsening of the patient's condition. The dietitian or healthcare team should promptly assess the symptoms, food texture, portion, timing, and possible medical causes before modifying the plan. Therefore, option A is the only situation that clearly requires immediate clinical review.

Nausea and vomiting can be aggravated by strong food odours, excessive heat, or an unpleasant serving temperature. Mild-smelling foods served at a comfortable temperature may improve acceptance and reduce the chance of further nausea. Careful sensory presentation is therefore especially important for the patient described in option C.

Poor intake may result from nausea, pain, unsuitable texture, disliked flavour, cultural preferences, difficulty chewing or swallowing, cost, or misunderstanding of the prescription. The first corrective action is therefore to listen to the patient and identify the specific barrier. Only after assessment should the diet be adjusted with professional guidance, making option A correct.

Diet and medicines can interact in clinically important ways. A medicine may reduce appetite, cause nausea or constipation, alter digestion, interfere with the absorption of vitamins and minerals, or change how nutrients are used by the body. Conversely, certain foods can change the absorption or action of a medicine. Therefore, diet therapy and medication should be planned together by considering the patient’s disease, prescribed drug, nutritional needs, and professional medical advice. The other options use absolute statements that are unsafe and incorrect.

Excess sodium can promote water retention and may worsen edema; it can also contribute to higher blood pressure in salt-sensitive people. A suitably reduced-sodium plan, based on the patient's condition and medical advice, may help manage both problems. It does not mean eliminating all sodium without supervision.

Carbohydrates are digested into glucose and therefore have a direct influence on blood glucose after meals. Controlling the amount, distributing it across meals, and coordinating it with medicines and activity can support better control. The exact plan must be individualized rather than based on total avoidance.

When appetite is poor, large meals may be difficult to finish. Small meals enriched with appropriate energy and nutrients can provide more nourishment in a manageable volume and may improve total intake. The additions must still suit the disease, swallowing ability, digestive tolerance, and prescribed nutrient restrictions.

Obesity management depends on overall energy balance, not merely on removing fat. A low-fat food can still provide substantial calories if eaten in large amounts, while a sustainable plan should consider portions, food quality, activity, behaviour, and medical needs. Therefore total energy intake also requires attention.

Nausea can be triggered or worsened by strong food odours, heavy meals, and greasy preparations. Light meals with mild aromas, small portions, suitable temperature, and gradual intake may improve acceptance. The underlying cause must still be assessed, and persistent vomiting or inability to drink requires medical attention.

Option A is correct because energy needs and digestive tolerance must be considered together. A patient who cannot digest much fat may receive energy from tolerated carbohydrates, suitable protein foods, or medically advised alternatives rather than fried foods. Individual assessment is necessary so that the diet supplies energy without worsening symptoms.

Option A is correct because a person may have normal weight while lacking iron, vitamin A, iodine, vitamin B12, or other micronutrients. Weight mainly reflects body mass and does not fully reveal dietary quality or nutrient stores. A sound nutrition assessment therefore combines history, clinical signs, diet information, and relevant laboratory findings.

Option A is correct because hypertension often requires attention to total sodium intake, not merely the salt added during cooking. Packaged snacks, pickles, sauces, instant noodles, bakery products, and processed meats may contain hidden sodium. Reading labels and choosing less processed foods can support a low-sodium therapeutic plan, although exact advice should be individualized.

Option A is correct because an oral nutritional supplement may help when ordinary food does not provide enough energy, protein, or other nutrients, provided the patient can safely swallow and use the product. It should complement, not automatically replace, meals. Assessment of diagnosis, intake, tolerance, allergies, cost, and treatment goals is necessary before recommending it.

Option A is correct because respectful dietary counselling protects autonomy, privacy, and dignity while making the plan more acceptable. Asking about preferences, beliefs, symptoms, resources, and goals supports shared decision-making and trust. Coercion, public disclosure, and ignoring the patient can damage the relationship and reduce adherence, even when the prescription itself is appropriate.

Option A is correct because gradually increasing fibre can improve stool bulk and support bowel movement in suitable cases of constipation. The increase should be accompanied by adequate fluid when medically allowed, regular activity, and monitoring for pain or bloating. A sudden large increase may cause gas or discomfort, and fibre is not appropriate in every intestinal condition.

Dietary fibre, particularly fibre from vegetables, pulses, fruits in suitable portions, and whole grains, can slow digestion and the absorption of carbohydrate. This may reduce sharp rises in blood glucose, improve fullness, and support bowel health. The amount must still be individualised according to the patient’s overall plan.

Fibre absorbs water and increases stool bulk, but it works best when adequate fluid is available and the patient can safely drink. Gradually increasing fibre, encouraging appropriate physical activity, and reviewing medicines and medical causes may help. Fluid advice must be modified if the patient has a fluid restriction, heart failure, or severe kidney disease.

Severe burns produce a strong stress response, causing hypermetabolism, increased protein breakdown, heat loss and greater demands for immune defence. Additional energy supplies fuel these processes, while protein supports collagen formation, wound closure, new tissue growth and recovery. Fluids and electrolytes are also required, but carbohydrates alone cannot replace burn-related fluid loss.

During cancer treatment, nausea can reduce appetite and make large meals difficult to tolerate. Small, frequent portions of relatively dry, bland foods, eaten slowly, may be easier to keep down. Strong smells, greasy foods and spicy items may worsen symptoms. Fluids should be taken in small sips, and persistent vomiting requires professional assessment.

Teaching family members to measure portions is especially useful when a patient must continue a controlled or therapeutic diet after returning home. Accurate portion measurement helps maintain prescribed energy, carbohydrate, sodium, or fluid limits, reduces accidental overconsumption, and supports adherence. Family participation also makes discharge counselling practical and sustainable.