Wednesday 13 July 2011

Sea Food

Sea Food
Seafood refers to any sea animal or plant that is served as food and eaten by humans. Seafoods include seawater animals, such as fish and shellfish (including molluscs and crustaceans).By extension, in North America although not generally in the United Kingdom, the term seafood is also applied to similar animals from fresh water and all edible aquatic animals are collectively referred to as seafood, however in some countries such as New Zealand they are categorized as "Game".Edible seaweeds are also seafood, and are widely eaten around the world, especially in Asia. See the category of sea vegetables.The harvesting of wild seafood is known as fishing and the cultivation and farming of seafood is known as aquaculture, mariculture, or in the case of fish, fish farming. Seafood is often distinguished from meat, although it is still animal and is excluded in a strict vegetarian diet. Seafood is an important source of protein in many diets around the world, especially in coastal areas.

There are over 32,000 species of fish, making them the most diverse group of vertebrates. However, only a small number of the total species are considered food fish and are commonly eaten.They aregiven below :

  • Anchovy
  • Carp
  • Catfish
  • Cod
  • Eel
  • Haddock
  • Halibut
  • Herring
  • Mackerel
  • Salmon
  • Sardine
  • Scad
  • Snapper
  • Tilapia
  • Trout
  • Tuna

Health benefits of eating seafood

Research over the past few decades has shown that the nutrients and minerals in seafood can make improvements in brain development and reproduction and has highlighted the role for seafood in the functionality of the human body.

 Heart health

Doctors have known of strong links between fish and healthy hearts ever since they noticed that fish-eating Inuit populations in the Arctic had low levels of heart disease. One study has suggested that adding one portion of fish a week to your diet can cut your chances of suffering a heart attack by half.

Fish is thought to protect the heart because eating less saturated fat and more Omega-3 can help to lower the amount of cholesterol and triglycerides in the blood – two fats that, in excess, increase the risk of heart disease. Omega-3 fats also have natural built-in anti-oxidants, which are thought to stop the thickening and damaging of artery walls.

Regularly eating fish oils is also thought to reduce the risk of arrhythmia – irregular electrical activity in the heart which increases the risk of sudden heart attacks.

Brain functionality

10-12% of the human brain is composed of lipids, including the Omega-3 fat DHA. Recent studies suggest that older people can boost their brain power by eating more oily fish, with with regular consumers being able to remember better and think faster than those who don't consume at all. Other research has also suggested that adding more DHA to the diet of children with attention-deficit hyperactivity disorder can reduce their behavioural problems and improve their reading skills, while there have also been links suggested between DHA and better concentration. Separate studies have suggested that older people who eat fish at least once a week could also have a lower chance of developing dementia and Alzheimer's disease.

 Joint benefits

Including fish as a regular part of a balanced diet has been shown to help the symptoms of rheumatoid arthritis – a painful condition that causes joints to swell up, reducing strength and mobility. Studies also show that sufferers feel less stiff and sore in the morning if they keep their fish oil intake topped up.

Recent research has also found a link between Omega-3 fats and a slowing down in the wearing of cartilage that leads to osteoarthritis, opening the door for more research into whether eating more fish could help prevent the disease.

 Iodine, Selenium, Vitamin A, Zinc

Fish is high in minerals such as iodine and selenium, which keep the body running smoothly. Iodine is essential for the thyroid gland, which controls growth and metabolism, while selenium is used to make enzymes that protect cell walls from cancer-causing free radicals, and helps prevent DNA damage caused by radiation and some chemicals.

Fish is also an excellent source of vitamin A, which is needed for healthy skin and eyes, and vitamin D, which is needed to help the body absorb calcium to strengthen teeth and bones.

 Mercury content

Fish and shellfish have a natural tendency to concentrate mercury in their bodies, often in the form of methylmercury, a highly toxic organic compound of mercury. Species of fish that are high on the food chain, such as shark, swordfish, king mackerel, albacore tuna, and tilefish contain higher concentrations of mercury than others. This is because mercury is stored in the muscle tissues of fish, and when a predatory fish eats another fish, it assumes the entire body burden of mercury in the consumed fish. Since fish are less efficient at depurating than accumulating methylmercury, fish-tissue concentrations increase over time. Thus species that are high on the food chain amass body burdens of mercury that can be ten times higher than the species they consume. This process is called biomagnification. The first occurrence of widespread mercury poisoning in humans occurred this way in Minamata, Japan, now called Minamata disease.

 Overfishing

Research into population trends of various species of seafood is pointing to a global collapse of seafood species by 2048. Such a collapse would occur due to pollution and overfishing, threatening oceanic ecosystems, according to some researchers.

A major international scientific study released in November 2006 in the journal Science found that about one-third of all fishing stocks worldwide have collapsed (with a collapse being defined as a decline to less than 10% of their maximum observed abundance), and that if current trends continue all fish stocks worldwide will collapse within fifty years. In July 2009, Boris Worm of Dalhousie University, the author of the November 2006 study in Science, co-authored an update on the state of the world's fisheries with one of the original study's critics, Ray Hilborn of the University of Washington at Seattle. The new study found that through good fisheries management techniques even depleted fish stocks can be revived and made commercially viable again.

The FAO State of World Fisheries and Aquaculture 2004 report estimates that in 2003, of the main fish stocks or groups of resources for which assessment information is available, "approximately one-quarter were overexploited, depleted or recovering from depletion (16%, 7% and 1% respectively) and needed rebuilding."

The National Fisheries Institute, a trade advocacy group representing the United States seafood industry, disagree. They claim that currently observed declines in fish population are due to natural fluctuations and that enhanced technologies will eventually alleviate whatever impact humanity is having on oceanic life.
 

Friday 20 May 2011

Baby Food

Baby food is any food, other than breastmilk or infant formula, that is made specifically for infants, roughly between the ages of four months to two years. The food comes in multiple varieties and tastes, can be produced by many manufacturers, or may be table food that the rest of the family is eating, mashed up. Because infants lack teeth, many different baby foods are designed for ease of eating; they are either a soft, liquidy paste or an easily chewed food.

Nutrition

Babies typically move to consuming baby food once nursing or formula is not sufficient for the child's appetite. Babies do not need to have teeth to transition to eating solid foods. Teeth, however, normally do begin to show up at this age. Care should be taken with certain foods that pose a choking hazard, such as undercooked vegetables, or food that may contain bones. Babies should begin eating liquid style baby food, sometimes mixed with rice cereal and formula, or breast milk. Pureed vegetables and fruits are an example of liquid style baby food. Then, as the baby is better able to chew, small, soft pieces or lumps may be included. Care should be taken, as babies with teeth have the ability to break off pieces of food but they do not possess the back molars to grind, so concerned parents should carefully mash or break baby food into manageable pieces for their baby. Around 6 months of age, babies may begin to feed themselves (picking up food pieces with hands, using the whole fist, or later the pincer grasp- thumb and forefinger) with help from parents

It is often recommended to give baby solid food at around 6 months of age, but babies differ greatly. The only good way to know when to introduce baby food is to watch for signs of readiness in the child. Signs of readiness include the ability to sit without help, loss of tongue thrust and the display of active interest in food that others are eating. Baby may be started directly on normal family food if attention is given to choking hazards, this is referred to as baby-led weaning. Because breast milk takes on the flavor of foods eaten by the mother, these foods are especially good choices.

If there is a family history of allergies, one may wish to introduce only one new food at a time, leaving a few days in between to notice any reactions that would indicate a food allergy or sensitivity. This way if baby is unable to tolerate a certain food then it can be determined which food is causing the reaction.


Health

As a global public health recommendation, the World Health Organization recommends that infants should be exclusively breastfed for the first six months of life to achieve optimal growth, development and health. Six month old infants are physiologically and developmentally ready for new foods, textures and modes of feeding.Experts advising the World Health Assembly have provided evidence that introducing solids earlier than six months increases babies' chances of illness, without improving growth


Two 25ml samples of human breast milk. The left hand sample is foremilk, the watery milk coming from a full breast. The right hand sample is hindmilk, the creamy milk coming from a nearly empty breast.

One of the health concerns associated with the introduction of solid foods before six months is iron deficiency. The early introduction of complementary foods may satisfy the hunger of the infant, resulting in less frequent breastfeeding and ultimately less milk production in the mother. Because iron absorption from human milk is depressed when the milk is in contact with other foods in the proximal small bowel, early use of complementary foods may increase the risk of iron depletion and anemia.



On June 29 2011 Nestle France decided as precaution to recall a batch of P'tit pot baby food that were stored in glass jars. This was due to a customer reporting that they found shards of glass in the baby food, this sparked an investigation into whether it was an isolated incident involving one jar or a whole batch they concluded it was of just one jar. Nestle insist their top priority is customer safety and satisfaction and offered their sincerest apologies for any inconvenience and distress over a child's safety.

Around the world

Baby food varies from culture to culture. In the United States, babies are usually started with bland cereals and then move on to mashed fruits and vegetables. In China and other east Asian countries, home made baby food is common, and babies are started on rice porridge called xifan, then move on to mashed fruits, soft vegetables, tofu and fish. These various foods are usually added to the porridge babies eat.In Sweden, it is common to start with mashed fruit, such as bananas. Oatmeal and mashed vegetables are also recommended. In western Africa, maize porridge is often the first solid food given to young children. In numerous cultures around the world, the food is sometimes pre-chewed by the caretaker of the baby in order to pulverise the food and start the digestion process.

An infant's first bite of solid food is ceremonial and holds religious importance in many cultures. An example of this is annaprashan, a Hindu ritual where the infant is fed a sweetened rice porridge, usually blessed, by an elder family member. Similar rites of passage are practiced across Asia, including the Bengal region, Vietnam, and Thailand.

In Canada, the most commonly used first food is iron-fortified infant cereal. Meat and alternatives are iron-containing foods that can also be introduced at this stage. The foods in this group include meats, fish, poultry, cooked egg yolks, and alternatives such as well-cooked legumes and tofu. Iron from meat sources is better absorbed than iron from non-meat sources.

Variations

Baby food is a humanitarian relief item, although delivery of infant formula is discouraged because it can discourage breastfeeding and local water supplies may be contaminated after a disaster.





Baby food is available in dry, ready-to-feed and frozen forms, which are prepared by the parent in small batches and fed to the child. Dry baby food, such as rice or oatmeal cereals, are mixed with a liquid until reconstituted.

Frozen baby food is a form of heat processed baby food that enables lower cooking temperatures by finalizing the product in a frozen, rather than the more traditional jarred, form.[citation needed] Frozen baby food is made by cooking, pureeing and freezing fresh fruits and vegetables. Frozen baby food is an alternative for parents who make baby food at home and freeze it in ice cube trays.

Friday 13 May 2011

Health food

The term Health Food is generally used to describe foods that are considered to be beneficial to health. However, the term is not precisely defined by national regulatory agencies such as the USDA or the U.S. Food and Drug Administration. Health foods are sold in health food stores or in the health/organic sections of supermarkets.There are a wide variety of diet regimes which are claimed to have an effect on health. The term "health food" can be applied to carnivorous, vegetarian, macrobiotic, vegan, raw (uncooked) and fruitarian diets, amongst others.

A balanced diet comprising of diverse and healthy foods is key to promoting good health. After all, we are what we eat - Research continues to prove that eating healthy food promotes good health and unhealthy food habits lead to a diseased body. Foods contain vital nutrients that aid our body’s metabolic function. However, a lack of consumption of these nutrients or feeding upon the wrong kinds of food leads to an accumulation of toxins within the body, resulting in chronic diseases in the long run.
A nutritious diet while ensuring overall well being, helps to maintain a healthy Body Mass Index (BMI), reduces the risk of several debilitating diseases like cancer, cardiovascular ailments, diabetes, osteoporosis and stroke. Thus a nutritious & healthy diet is important in the prevention and cure of various diseases.

Diet for diseases

There are several health conditions that can be caused or aggravated by the food we eat. However, there are also several foods that you can include in your diet to help prevent or treat diseases. It is simplest to draw up a balanced diet chart as this will ensure that you get all the nutrients you require on a regular basis. A nutrition diet chart is a diet chart that helps you to keep a track of your nutritional diet requirements and is a very useful tool when drawing up a personalized diet plan.

Heart diseases: Coronary heart diseases are a very common health problem and they are closely linked to a diet that is high in unhealthy fats. Decreasing one’s intake of fatty foods, especially fried food, will go a long way in preventing heart diseases. On the other hand, a healthy diet chart with an adequate amount of high fiber foods is seen to prevent heart diseases. People who suffer from heart problems are often advised to follow a specific high fiber diet for heart diseases that is rich in raw fruits and vegetables.


Diabetes: While genetics does play an important role in the onset of diabetes, an unhealthy lifestyle and bad eating habits are also contributing factors. A diabetes diet chart is a diet plan that is high in fiber and low in fat with a minimum amount of saturated fats. A Vegan diet is very effective in controlling this problem.


Anemia: Anemia is generally caused by nutritional deficiencies and is most commonly associated with a diet that is low in iron. Iron rich foods such as green leafy vegetables should be included in a diet for anemia.


In addition to these diseases, conditions such as high cholesterol, high blood pressure, gout, and even cancer are affected by the individual’s diet. There are several diet plans such as the Alkaline Acid Diet plan, the Low Glycemic Index diet and the DASH diet plan that are meant to treat specific medical conditions.  

Healthy Food Groups
 
Since no single food group can nourish the body with all the vital ingredients it requires, it is important that we consume a variety of healthy foods to derive the nutrition our body needs. There are five main food groups, they are:

• Fruits
• Vegetables
• Cereals and Pulses
• Dairy
• Poultry, Fish and Meat products

A healthy balanced diet of these five food groups ensures essential vitamins, minerals and dietary fiber. The food group serving size will depend upon various factors like age, activity level, body size and gender. It is also important that one eat a variety of healthy foods from within and across the food groups. As some foods from within a food group provide more nutrients than others. This will ensure that one gets the maximum recommended nutrition from the food group; besides the food variety will make for an interesting meal.

Diet for weight loss

Problems related to excessive weight gain are commonplace as we tend to lead a sedentary lifestyle and have unhealthy eating habits. People with excessive weight gain often try to crash diet in the hope of obtaining a svelte figure. However, this type of a restrictive diet chart for weight loss is extremely unhealthy and not easy to stick to and so the individual succumbs to temptation and goes back to his/her unhealthy eating habits. The cycle of repeated trial and failure can leave the individual disillusioned and finally the person stops trying to lose weight. However, a simple and easy weight loss diet chart can work wonders for overweight and obese people. It is best to follow a daily diet chart as this will help you to stick to your diet. In order to balance a diet chart, it is important to take into account your physical activity levels as a person who exercises daily will have a higher calorie need as compared to a person who leads a sedentary lifestyle.
 

You can include healthy snacks in your daily diet charts as this will allow you to snack without having to worry about excessive weight gain. It is important to have realistic goals and dieticians often suggest that overweight individuals should not concentrate on weight loss but rather try to follow a healthy diet plan. Once a person has decided that sticking to a healthy diet chart on a daily basis is their main goal, they will not unnecessarily fret over their progress in terms of weight loss. This will allow a person to lose weight at a steady pace with a higher chance of sticking to their diet plan. Once an individual has lost a considerable amount of weight, they can then use a follow-up diet chart to ensure that the weight loss is permanent. Keep in mind that a healthy balanced diet will lead to a slimmer and healthier you!

In conclusion, it must be noted that allopathic medicine treats the symptoms rather than the root cause of the disease, which is usually caused by wrong eating habits leading to an accumulation of toxins within the system. Whereas a nutritious healthy diet can rectify underlying causes of diseases and restore one to wholeness of mind and body. Once we realize the connection between a wholesome balanced diet and good health, our food will be our medicine and maintaining good health will be a matter of making the right food choices and leading a healthy lifestyle.

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