Brenda Khan
There are many reasons why someone might adopt a special diet. Some of the most common reasons include weight loss, ethical or religious beliefs, allergies or intolerances, and clinical needs. For example, a physician might recommend a special diet to a patient to help them manage a disease, control their weight, or accommodate physical or neurological changes. In other cases, people may choose to adopt a special diet to address a food allergy or intolerance, such as gluten or lactose intolerance. Others may choose to follow a special diet for ethical or religious reasons, such as veganism or a Halal diet. Some special diets are also designed to address specific health concerns, such as hypertension or renal dysfunction. These diets typically involve restricting or limiting certain types of foods, such as sodium or carbohydrates.
| Characteristics | Values |
|---|---|
| Purpose | Medical condition, weight loss, weight control, allergies, intolerance, ethical or religious beliefs |
| Type | Liquid diet, soft diet, diabetic diet, low-calorie diet, high-calorie diet, low-cholesterol diet, low-sodium diet, high-protein diet, low-residue diet, gluten-free diet, detox diet, juice fasting, master cleanse, vegan diet, pescetarian diet, low-carbohydrate diet, low-FODMAP diet, specific carbohydrate diet, DASH diet, elimination diet, dairy-free diet, etc. |
| Nutritional Requirements | Nutritional requirements vary depending on the type of diet. For example, a high-calorie diet requires extra carbohydrates and proteins but excludes high-fat and fried foods. |
| Restrictions | Restrictions vary depending on the type of diet. For example, a low-FODMAP diet restricts all fermentable carbohydrates, while a vegan diet restricts all animal-based products. |
| Medical Condition | Diabetes, heart disease, atherosclerosis, kidney disease, high blood pressure, eating disorders, cancer, hyperthyroidism, etc. |
| Meal Planning | A special diet may be recommended, prescribed, or administered by a medical professional. It is typically planned by a registered dietician and may be modified based on individual needs and preferences. |
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What You'll Learn
Fad diets
The paleo diet is another fad diet that involves consuming half of one's calories from lean animal foods, as well as eggs, fruit, non-starchy vegetables, unsaturated fats, some alcohol, and water. While there are big health claims associated with the paleo diet, such as curing heart disease, diabetes, and cancer, it excludes whole grains, which have been linked to lowering the risk of these diseases.
Detox diets are another type of fad diet that involves either restricting or flushing out substances considered harmful. Examples include restricting food consumption to foods without colourings or preservatives, taking supplements, or drinking large amounts of water. However, there is no scientific evidence of any benefit from detox diets, and they are considered pseudoscientific.
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Weight loss diets
Weight loss is a common goal for many people, and there are a plethora of diets that can help achieve this. However, it is important to remember that not all diets are healthy, and some can pose significant health risks. Fad diets, for example, are short-term weight-loss plans that involve drastic changes to normal eating habits and are often not sustainable or healthy.
A healthy diet for weight loss should be a permanent shift towards healthier eating habits, favouring natural, unprocessed foods over pre-packaged meals and snacks. The Mediterranean diet, for example, emphasizes eating plenty of fruits, vegetables, fish, and healthy oils while restricting refined and highly processed foods. Studies have shown that this diet can promote weight loss and overall health, including a lower risk of heart disease, diabetes, depression, and some forms of cancer.
The DASH diet (Dietary Approaches to Stop Hypertension) is another eating plan that can aid weight loss and is especially beneficial for individuals with hypertension. It recommends consuming large quantities of fruits, vegetables, whole grains, and low-fat dairy foods while avoiding sugar-sweetened items, red meat, and fats.
For those seeking a more structured plan, low-calorie diets are designed for weight loss and are often recommended for patients seeking bariatric treatment. Detox diets are another approach, which involve either restricting or flushing out harmful substances, although there is no scientific evidence of their benefit, and they are considered pseudoscientific.
Ultimately, the best diet for weight loss is one that suits an individual's needs and preferences, helping them stay motivated and make sustainable changes.
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Medical diets
Diabetic Diet
A diabetic diet varies from patient to patient depending on the type and intensity of diabetes, the patient's personal history, and individual nutrient needs. Carbohydrate servings are carefully controlled, and small snacks may be included in the meal plan. The main consideration in this type of diet is to avoid food items with high sugar content and refined carbohydrates, as these can cause a dangerous rise and crash in a diabetic's blood sugar levels.
Renal Diet
A renal diet is carefully planned with special consideration of nutrients and is often adjusted as kidney disease progresses. It may serve the purpose of attempting to slow down the process of renal dysfunction. If dialysis treatments are not being taken, the doctor may restrict protein intake of foods such as potatoes, tomatoes, oranges, and bananas.
Sodium-Controlled Diet
Sodium-controlled diets are usually prescribed for patients with hypertension and those with excess fluid accumulation. Intake of commercially prepared foods such as cured or smoked meats, canned vegetables, and regular soups, as well as buttermilk, salt, and other salty foods are limited or avoided. White milk, fresh or frozen meats, unsalted vegetables and fruits, and other low-sodium foods are included.
Low-Sodium Diet
A low-sodium diet is a nutrition therapy often prescribed to people with salt sensitivity, heart disease, or high blood pressure. To maintain a low-sodium diet, not only should the addition of salt be avoided, but also smoked meats, processed foods, and pickled foods.
Low-Residue Diet
A low-residue diet is one in which foods high in fiber, such as raw fruits and vegetables, cereals, and nuts, are avoided. This type of diet is typically used for patients with acute illness, before and after surgery, and other procedures such as X-rays and CT scans. It includes foods that are easy to digest and leave little residue in the gastrointestinal tract, such as clear liquids, coffee, tea, clear juices, gelatin, and clear broth.
Mechanical Soft Diet
The mechanical soft diet consists of foods that are soft in texture, moderately low in fiber, and easy to chew and digest. Most raw fruits and vegetables, seeds, nuts, and dried fruits are excluded. This diet is often used as a transition between a liquid diet and a regular diet. It includes milk, strained and creamed soups, grits, creamed cereal, and fruit and vegetable juices.
Enteral Nutrition
Enteral nutrition is a liquid nutritional formula delivered into the gastrointestinal tract through a gavage tube for people who cannot chew or swallow foods or fluids. This may be necessary due to trauma or cancers to the face, mouth, esophagus, or neck, or in cases of advanced dementia.
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Religious diets
Jewish Diet
Jewish dietary laws, known as kosher, require specific preparation methods for all foods. A common restriction is the separation of dairy and meat products, meaning dishes containing dairy cannot also contain meat or poultry. Additionally, shellfish, pork, and other non-kosher animal species are prohibited. A kosher diet typically includes fruits, vegetables, grains, and legumes, while processed meats and cheeses are avoided.
Islamic Diet
Islamic dietary laws, called Halal, are derived from the Qur'an and Hadith (the sayings and teachings of Prophet Muhammad). These guidelines prohibit alcohol, pork, certain seafood, and carnivorous animals. Birds of prey, unclean animals (like rabbits), blood or blood products (such as pig fat), and food mixed with animal-derived ingredients are also forbidden. Muslims may also observe fasting during Ramadan, which involves abstaining from eating or drinking during daylight hours for a month annually.
Hindu Diet
Hindus follow a vegetarian lifestyle, abstaining from meat, including beef, pork, chicken, seafood, and eggs. This practice is based on the principle of ahimsa, which advocates for treating animals with respect and avoiding causing them pain or suffering.
Seventh-day Adventist Diet
The Seventh-day Adventist dietary laws emphasize a pure and healthy lifestyle. This diet includes abstaining from pork, shellfish, animals with cloven hooves, and high-fat or high-cholesterol meat sources. It also forbids alcoholic drinks, tobacco, and foods with large amounts of sugar. This diet aligns with vegan practices, making it a relatively simple transition for those already following a vegan lifestyle.
Word of Wisdom Diet
Followed by members of the Church of Jesus Christ of Latter-day Saints, this diet emphasizes the consumption of "wholesome plants in the season thereof." It encourages eating meat sparingly, primarily during winters, cold periods, or famines. Grain is considered the "staff of life" in this dietary practice.
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Ethical diets
Lacto-ovo vegetarians, on the other hand, include eggs and dairy in their diet while abstaining from meat, poultry, and fish. This type of diet is popular among Adventists, who also tend towards veganism and pescetarianism. The Word of Wisdom diet, based on a section of the Doctrine and Covenants, advises the consumption of "wholesome plants in the season thereof", eating meat sparingly, and grain as the "staff of life".
Another ethical diet is the gluten-free diet, often followed by those with celiac disease or gluten intolerance. While this diet is medically necessary for some, others may choose it as an ethical stance against the consumption of gluten, which can be found in wheat, barley, and rye.
Detox diets are another type of ethical diet that involves either restricting or flushing out substances considered harmful. This could include avoiding food with colourings or preservatives, taking supplements, or increasing water intake. However, it is important to note that there is criticism regarding this diet, as excessive water intake can lead to hyponatremia, and there is little scientific evidence supporting the benefits of detox diets.
Lastly, some people may choose to follow a dairy-free diet, eliminating products such as milk, cheese, butter, yogurt, and ice cream. This diet is often adopted by those with lactose intolerance but can also be a personal choice to reduce the consumption of animal-based products.
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Frequently asked questions
There are many different types of special diets, including weight loss or low-calorie diets, diabetic diets, low-carbohydrate diets, low-fat or low-cholesterol diets, gluten-free diets, and sodium-controlled diets. Some people also choose to follow a vegetarian or vegan diet for ethical reasons.
People may follow a special diet for a variety of reasons, including weight loss, management of a medical condition (such as diabetes or hypertension), food allergies or intolerances, or ethical and religious beliefs.
It is important to consider individual needs and preferences when following a special diet. Factors such as culture, religion, age, illness, and disability may impact a person's dietary choices. It is also crucial to be mindful of any food allergies or intolerances and to consult a healthcare professional before making significant changes to your diet.
