File Name: food sources of vitamins and minerals writer.zip
Food is any substance  consumed to provide nutritional support for an organism. Food is usually of plant , animal or fungal origin, and contains essential nutrients , such as carbohydrates , fats , proteins , vitamins , or minerals. The substance is ingested by an organism and assimilated by the organism's cells to provide energy , maintain life, or stimulate growth.
Different species of animals have different feeding behaviours that satisfy the needs of their unique metabolisms , often evolved to fill a specific ecological niche within specific geographical contexts. Omnivorous humans are highly adaptable and have adapted to obtain food in many different ecosystems.
Historically, humans secured food through two main methods: hunting and gathering and agriculture. As agricultural technologies increased, humans settled into agriculture lifestyles with diets shaped by the agriculture opportunities in their geography.
Geographic and cultural differences has led to creation of numerous cuisines and culinary arts , including a wide array of ingredients , herbs , spices , techniques , and dishes. As cultures have mixed through forces like international trade and globalization , ingredients have become more widely available beyond their geographic and cultural origins, creating a cosmopolitan exchange of different food traditions and practices.
Today, the majority of the food energy required by the ever- increasing population of the world is supplied by the industrial food industry , which produces food with intensive agriculture and distributes it through complex food processing and food distribution systems.
The food system has significant impacts on a wide range of other social and political issues including: sustainability , biological diversity , economics , population growth , water supply , and access to food.
The right to food is a human right derived from the International Covenant on Economic, Social and Cultural Rights ICESCR , recognizing the "right to an adequate standard of living, including adequate food", as well as the " fundamental right to be free from hunger ". Because of these fundamental rights, food security is often a priority international policy activity; for example Sustainable Development Goal 2 "Zero hunger" is meant to eliminate hunger by Most food has its origin in plants.
Some food is obtained directly from plants; but even animals that are used as food sources are raised by feeding them food derived from plants.
Cereal grain is a staple food that provides more food energy worldwide than any other type of crop. Some foods not from animal or plant sources include various edible fungi , especially mushrooms. Fungi and ambient bacteria are used in the preparation of fermented and pickled foods like leavened bread , alcoholic drinks , cheese , pickles , kombucha , and yogurt.
Another example is blue-green algae such as Spirulina. Many plants and plant parts are eaten as food and around 2, plant species are cultivated for food. Many of these plant species have several distinct cultivars. Seeds of plants are a good source of food for animals, including humans, because they contain the nutrients necessary for the plant's initial growth, including many healthful fats, such as omega fats. In fact, the majority of food consumed by human beings are seed-based foods.
Edible seeds include cereals corn , wheat , rice , et cetera , legumes beans , peas , lentils , et cetera , and nuts. Oilseeds are often pressed to produce rich oils - sunflower , flaxseed , rapeseed including canola oil , sesame , et cetera. Seeds are typically high in unsaturated fats and, in moderation, are considered a health food. However, not all seeds are edible. Large seeds, such as those from a lemon , pose a choking hazard, while seeds from cherries and apples contain cyanide which could be poisonous only if consumed in large volumes.
Fruits are the ripened ovaries of plants, including the seeds within. Many plants and animals have coevolved such that the fruits of the former are an attractive food source to the latter, because animals that eat the fruits may excrete the seeds some distance away.
Fruits, therefore, make up a significant part of the diets of most cultures. Some botanical fruits, such as tomatoes , pumpkins , and eggplants , are eaten as vegetables. Vegetables are a second type of plant matter that is commonly eaten as food.
These include root vegetables potatoes and carrots , bulbs onion family , leaf vegetables spinach and lettuce , stem vegetables bamboo shoots and asparagus , and inflorescence vegetables globe artichokes and broccoli and other vegetables such as cabbage or cauliflower.
Animals are used as food either directly or indirectly by the products they produce. Meat is an example of a direct product taken from an animal, which comes from muscle systems or from organs offal. Food products produced by animals include milk produced by mammary glands , which in many cultures is drunk or processed into dairy products cheese, butter, etc. In addition, birds and other animals lay eggs , which are often eaten, and bees produce honey , a reduced nectar from flowers, which is a popular sweetener in many cultures.
Some cultures consume blood , sometimes in the form of blood sausage , as a thickener for sauces, or in a cured , salted form for times of food scarcity, and others use blood in stews such as jugged hare. Some cultures and people do not consume meat or animal food products for cultural, dietary, health, ethical, or ideological reasons.
Vegetarians choose to forgo food from animal sources to varying degrees. Vegans do not consume any foods that are or contain ingredients from an animal source. Adulteration is a legal term meaning that a food product fails to meet the legal standards. One form of adulteration is an addition of another substance to a food item in order to increase the quantity of the food item in raw form or prepared form, which may result in the loss of actual quality of food item.
These substances may be either available food items or non-food items. Among meat and meat products some of the items used to adulterate are water or ice, carcasses, or carcasses of animals other than the animal meant to be consumed. Camping food includes ingredients used to prepare food suitable for backcountry camping and backpacking.
The foods differ substantially from the ingredients found in a typical home kitchen. The primary differences relate to campers' and backpackers' special needs for foods that have appropriate cooking time, perishability, weight, and nutritional content. To address these needs, camping food is often made up of either freeze-dried , precooked or dehydrated ingredients. Many campers use a combination of these foods. Freeze-drying requires the use of heavy machinery and is not something that most campers are able to do on their own.
Freeze-dried ingredients are often considered superior to dehydrated ingredients however because they rehydrate at camp faster and retain more flavor than their dehydrated counterparts. Freeze-dried ingredients take so little time to rehydrate that they can often be eaten without cooking them first and have a texture similar to a crunchy chip.
Dehydration can reduce the weight of the food by sixty to ninety percent by removing water through evaporation. Some foods dehydrate well, such as onions, peppers, and tomatoes. These meals contain pre-cooked foods in retort pouches. A retort pouch is a plastic and metal foil laminate pouch that is used as an alternative to traditional industrial canning methods. Such foods are usually intended to assist in weight loss or a change in body type, although bodybuilding supplements are designed to aid in gaining weight or muscle.
The process of making a diet version of a food usually requires finding an acceptable low-food-energy substitute for some high-food-energy ingredient. In some snacks, the food may be baked instead of fried thus reducing the food energy. In other cases, low-fat ingredients may be used as replacements. In whole grain foods, the higher fiber content effectively displaces some of the starch components of the flour. Since certain fibers have no food energy, this results in a modest energy reduction.
Another technique relies on the intentional addition of other reduced-food-energy ingredients, such as resistant starch or dietary fiber , to replace part of the flour and achieve a more significant energy reduction. Finger food is food meant to be eaten directly using the hands , in contrast to food eaten with a knife and fork , spoon , chopsticks , or other utensils. Examples of these are miniature meat pies, sausage rolls , sausages on sticks, cheese and olives on sticks, chicken drumsticks or wings , spring rolls , miniature quiches , samosas , sandwiches , Merenda or other such based foods, such as pitas or items in buns , bhajjis , potato wedges , vol au vents , several other such small items and risotto balls arancini.
Other well-known foods that are generally eaten with the hands include hamburgers , pizza , Chips , hot dogs , fruit and bread.
Fresh food is food which has not been preserved and has not spoiled yet. For vegetables and fruits , this means that they have been recently harvested and treated properly postharvest ; for meat , it has recently been slaughtered and butchered ; for fish , it has been recently caught or harvested and kept cold.
Dairy products are fresh and will spoil quickly. Thus, fresh cheese is cheese which has not been dried or salted for aging. Fresh food has not been dried , smoked , salted , frozen , canned , pickled , or otherwise preserved. Freezing food preserves it from the time it is prepared to the time it is eaten. Since early times, farmers, fishermen, and trappers have preserved grains and produce in unheated buildings during the winter season. In the food commodity industry , there are two processes: mechanical and cryogenic or flash freezing.
The kinetics of the freezing is important to preserve food quality and texture. Quicker freezing generates smaller ice crystals and maintains cellular structure. Preserving food in domestic kitchens during modern times is achieved using household freezers. Accepted advice to householders was to freeze food on the day of purchase.
The Food Standards Agency was reported as supporting the change, providing the food had been stored correctly up to that time. A functional food is a food given an additional function often one related to health-promotion or disease prevention by adding new ingredients or more of existing ingredients.
Health food is food marketed to provide human health effects beyond a normal healthy diet required for human nutrition. Foods marketed as health foods may be part of one or more categories, such as natural foods , organic foods , whole foods , vegetarian foods or dietary supplements. These products may be sold in health food stores or in the health food or organic sections of grocery stores.
A healthy diet is a diet that helps to maintain or improve overall health. A healthy diet provides the body with essential nutrition : fluid, macronutrients , micronutrients , and adequate calories.
For people who are healthy, a healthy diet is not complicated and contains mostly fruits, vegetables, and whole grains, and includes little to no processed food and sweetened beverages.
The requirements for a healthy diet can be met from a variety of plant-based and animal-based foods, although a non-animal source of vitamin B12 is needed for those following a vegan diet.
Nutrition facts labels are also mandatory in some countries to allow consumers to choose between foods based on the components relevant to health. A healthy lifestyle includes getting exercise every day along with eating a healthy diet. A healthy lifestyle may lower disease risks, such as obesity , heart disease , type 2 diabetes , hypertension and cancer.
There are specialized healthy diets, called medical nutrition therapy , for people with various diseases or conditions. There are also prescientific ideas about such specialized diets, as in dietary therapy in traditional Chinese medicine. The World Health Organization WHO makes the following 5 recommendations with respect to both populations and individuals: .
Live food is living food for carnivorous or omnivorous animals kept in captivity ; in other words, small animals such as insects or mice fed to larger carnivorous or omnivorous species kept either in a zoo or as a pet. Live food is commonly used as feed for a variety of species of exotic pets and zoo animals, ranging from alligators to various snakes , frogs and lizards , but also including other, non- reptile , non- amphibian carnivores and omnivores for instance, skunks , which are omnivorous mammals , can technically be fed a limited amount of live food, though this is not a common practice.
Common live food ranges from crickets used as an inexpensive form of feed for carnivorous and omnivorous reptiles such as bearded dragons and commonly available in pet stores for this reason , waxworms , mealworms and to a lesser extent cockroaches and locusts , to small birds and mammals such as mice or chickens.
Medical foods are foods that are specially formulated and intended for the dietary management of a disease that has distinctive nutritional needs that cannot be met by normal diet alone.
Eating a balanced diet helps people maintain good health and reduce their risk of disease. Dietary guidelines evolve with scientific advances, so it can be challenging to stay on top of current recommendations and know what to eat. In this article, we look at current dietary recommendations and describe how to build a balanced diet. Humans need a certain amount of calories and nutrients to stay healthy. A balanced diet provides all the nutrients a person requires, without going over the recommended daily calorie intake. By eating a balanced diet, people can get the nutrients and calories they need and avoid eating junk food, or food without nutritional value.
Dr. Rimm is an associate editor for the American Journal of Clinical Nutrition and the Many studies have looked at the effect of vitamin and mineral Potatoes aren't all bad; they're a good source of vitamin C, potassium.
Have a question? This is a fact sheet intended for health professionals. MVMs are still popular dietary supplements and, according to estimates, more than one-third of all Americans take these supplements [ 1 , 2 ].
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Nutrition is defined as the processes by which an animal or plant takes in and utilises food substances. In humans, nutrition is mainly achieved through the process of putting foods into our mouths, chewing and swallowing it. The required amounts of the essential nutrients differ by age and the state of the body, for example: physical activity, diseases present e.
The effective management of food intake and nutrition are both key to good health. Smart nutrition and food choices can help prevent disease.
Chapter Outline. There are seven main classes of nutrients that the body needs. These are carbohydrates, proteins, fats, vitamins, minerals, fiber and water. It is important to consume these seven nutrients on a daily basis to build and maintain health. Deficiencies, excesses and imbalances in diet can produce negative impacts on health, which may lead to diseases such as cardiovascular disease, diabetes, scurvy, obesity, or osteoporosis as well as psychological and behavioral problems. According to the reports of the United Nations World Health Organization WHO: , more than starvation the real challenge in developing nations today is malnutrition-the deficiency of micronutrients vitamins, minerals and essential amino acids that no longer allows the body to ensure growth and maintain its vital functions. We will discus about the sources, classification, importance and deficiency diseases of carbohydrates, proteins, vitamins and minerals in this unit.
Food is any substance  consumed to provide nutritional support for an organism. Food is usually of plant , animal or fungal origin, and contains essential nutrients , such as carbohydrates , fats , proteins , vitamins , or minerals. The substance is ingested by an organism and assimilated by the organism's cells to provide energy , maintain life, or stimulate growth. Different species of animals have different feeding behaviours that satisfy the needs of their unique metabolisms , often evolved to fill a specific ecological niche within specific geographical contexts. Omnivorous humans are highly adaptable and have adapted to obtain food in many different ecosystems. Historically, humans secured food through two main methods: hunting and gathering and agriculture.