Posts Tagged ‘nutritional concepts’

Vitamins – part 2

Monday, December 5th, 2011

Vitamins regulate a variety of essential bodily functions.  They are crucial in many of our metabolic processes so that we can benefit from the energy in our foods.  Vitamins are also very important in helping to build our bones, teeth, skin, blood and many other vital body tissues.

Vitamins are classified as either water soluble or fat soluble based on how they are absorbed and used by the body.

Following on from my last blog, this week we focus on the water soluble vitamins.

Water soluble (Vitamin C and all of the B vitamins): Water soluble vitamins are vitamins that our bodies do not  store. These vitamins dissolve in water when they are ingested, then go into the blood stream.

The body keeps what it needs at that time, and excess amounts are excreted in the urine. Since they can’t be stored, everybody needs a continuous supply of water soluble vitamins in order to stay healthy.

In this blog, we explain the why we need each water soluble vitamin and which foods are good sources of them.

Name

Why do we need it?

Where do we find it?

Vitamin C (ascorbic acid)

It is an antioxidant, increases our immunity, and is important to help our uptake of iron. It is also used in the production of collagen, which we need for healthy skin, hair, and the cartilage in our joints.

Many fruit and vegetables especially kiwi and citrus fruits, cranberries, guava, peppers, broccoli, sweet potatoes, brussel sprouts

Thiamine
(vitamin B1)

Important in the processing of carbohydrates to produce energy and other metabolism processes

Pork, wholegrain breads and brown rice, many fruits and vegetables, milk, cheese, eggs, fortified breakfast cereals.

Riboflavin
(vitamin B2)

Keeps our skin and eyes healthy

Milk, eggs, fortified breakfast cereals, rice, mushrooms.

Niacin
(vitamin B3)

Helps to process cholesterol, which should inhibit the likelihood of heart disease, as well as in the production of energy

Beef, pork, chicken, wheat flour, eggs, milk

Pantothenic Acid (vitamin B5)

Important in our metabolism processes, especially in the production of energy in cells.

Beef, chicken, potatoes, oats, tomatoes, liver, kidneys, eggs, broccoli, wholemeal bread, brown rice, some breakfast cereals

Vitamin B6
(pyridoxine)

Important roles in the processing (metabolism) of proteins, fats and carbohydrates.

Fortified breakfast cereals, liver, pork, chicken, turkey, cod, wholemeal bread, brown rice, oatmeal, eggs, peanuts, some vegetables (potatoes, peppers, garlic), dried prunes and dried apricots

Folate, Folic Acid
(vitamin B9)

Important to ensure cell division works well, hence importance to pregnancy, where folate is also particularly crucial in the prevention of neural tube defects. Also important for red blood cell production .

Green vegetables (e.g. broccoli, spinach, sprouts, peas), fortified breakfast cereals, chick peas (humous), yeast extract (e.g. Marmite), brown rice, some fruit (oranges and bananas)

Vitamin B12
(cobalamin)

Similar to folate, as it is important to cell division, red blood cell production and also for functioning of nerves.

It originates in bacteria, yeast and microbes in soil. Plants can’t store it, so people get their B12 almost exclusively from meat, liver, poultry, fish, eggs, dairy products, yeast extract (e.g. Marmite)

Biotin
(vitamin B7)

Important in our metabolism processes

Liver, kidney, eggs, dried fruits (e.g. prunes, apricots)

Vitamins – part 1

Monday, November 21st, 2011

Vitamins regulate a variety of essential bodily functions.  They are crucial in many of our metabolic processes so that we can benefit from the energy in our foods.  Vitamins are also very important in helping to build our bones, teeth, skin, blood and many other vital body tissues.

Vitamins are classified as either water soluble or fat soluble based on how they are absorbed and used by the body.

This week we focus on the fat soluble vitamins. Join us in two weeks to learn more about water soluble vitamins.  

Fat Soluble (Vitamins A, D, E and K): Fat soluble vitamins are those that are normally stored in the body.

When these vitamins are ingested, they dissolve in fat. In a person with a healthy digestive system, the body uses what it needs at that time and stores the rest for future use.

In this blog, we explain the why we need each fat soluble vitamin and which foods are good sources of them.

Name

Why do we need it?

Where do we find it?

Vitamin A

It is important in helping with the moisturisation of our skin and mucous membranes (lining of the nose, eyes, throat).

Vitamin A also helps with night vision.

It is an antioxidant, which means that it protects against the effects of “free radicals” (unstable compounds that can damage healthy body cells).

Vitamin A also increases our immunity.

It is stored in our liver, so the liver of other animals is a rich source of vitamin A.

The animal source is known as retinol, and is also found in eggs, oily fish (e.g. mackerel), butter and milk.

The main plant source of vitamin A is known as beta-carotene and is found in orange/red fruit and vegetables (e.g. carrot, sweet potato, red pepper).

 

Vitamin D

Regulates and improves the uptake of calcium and phosphate in our bodies for healthy bones and teeth.

Important for pregnant and breastfeeding mothers to assist with the child’s bone development because babies can’t produce the vitamin D in their skin.

Sunlight (we make vitamin D in our skin), oily fish, liver, fortified products (e.g. breakfast cereal, margarine), eggs, baby milk formula.

 

Vitamin E

It helps to maintain our reproductive system, nerves and muscles.

Similar to vitamin A, vitamin E is also an antioxidant.

Nuts, seeds, plant oils (e.g. olive oil, corn oil), wheatgerm, some green leafy vegetables

Vitamin K

Important for helping our blood to clot properly (healing wounds) and in the formation of our bones and kidney tissues.

Green leafy vegetables (e.g. broccoli, spinach), vegetable oils, cereals. Small amounts in pork and cheese.

Calories, so what are they?

Monday, November 7th, 2011

A calorie is simply the unit that we use to measure energy.

All foods have a ‘calorific value’ and this is simply the amount of calories (energy) that a food will supply your body when it is eaten. Food labels on packaged foods usually list the energy content in two units; one is kcals (calories) the other is in kj (joules).

 

Your body needs energy to be able to fuel metabolic pathways that enable the body to work properly. We are all individuals and we have our own unique metabolic rate (this is the rate at which our body consumes calories per day). The average person’s metabolic rate is approximately 2000 calories per day.

The simple truth is that there is a ‘balance of energy’ in your body, if you burn more or less calories (through activity) than your body consumes daily (through food), you will lose or gain weight accordingly.

So how do you ‘burn’ calories?

There are a number of reasons why calories are burned in your body.

  • Your body requires a certain number of calories per day to simply stay alive. This is called Basal Metabolic Rate (BMR).  Your body burns these calories to maintain the most basic functions of your body such as breathing, blood circulation and brain activity.
  • The rest of the calories are ideally burned through exercise and activity.  Everything you do results in you burning calories – washing up, hoovering, climbing the stairs, anything that involves movement will contribute to the total calories burned by the body.

 

Pumpkin cake

Monday, October 24th, 2011

Preparation: 10 mins | Cook: 1 hour

Ingredients

  • 200g plain flour
  • 1 ¼ teaspoons bicarbonate of soda
  • 1 teaspoon salt
  • 1 teaspoon ground cinnamon
  • ½ teaspoon ground nutmeg
  • 255g pureed pumpkin
  • 200g dark brown soft sugar
  • 110ml buttermilk
  • 1 egg
  • 2 tablespoons butter, softened

Method

  1. Preheat oven to 180°C.
  2. Sift the flour, bicarbonate of soda, salt, cinnamon and nutmeg into a large bowl.
  3. Mix in the pumpkin, brown sugar, buttermilk, egg and butter until well blended. Pour into a 9×5 inch loaf tin and smooth the top.
  4. Bake for 1 hour in preheated oven, or until a cocktail stick inserted into the centre comes out clean.

 

College students – healthy eating tips

Monday, October 10th, 2011

When you go to college or university it may be the first time you’ve lived away from home and been fully independent. To have enough energy to study and enjoy student life to the full you need to eat regularly and healthily!

What does a healthy balanced diet really mean?

  • Eat regularly and base your meals on starchy foods
  • Eat lots of fruit and vegetables
  • Eat a wide variety of foods
  • Try to eat less salt
  • Cut down on saturated fats and sugars
  • Get active and try to be a healthy weight
  • Drink plenty of water
  • Don’t skip breakfast

Get organised

  • With some planning you can eat cheap and healthy meals on a tight budget
  • Make a shopping list before you go and shop
  • Watch your waste – when you buy foods that go off quickly, plan your meals carefully so it gets eaten or frozen straight away
  • Vary your meals otherwise you will get bored of eating and cooking the same things over and over again

What could you have in your food cupboard?

You need to stock your cupboard and fridge with easy to cook ingredients. Suggestions of meals include:

  • Soups – easy to make and nutritious especially if you add a lot of vegetables (fresh, frozen or canned).
  • Pasta – it’s quick and easy to cook and prepare. Keep pasta sauces in your cupboards and add your own flavours, vegetables etc. to it
  • Rice – mix cooked rice with leftover vegetables and meat
  • Bread is a good source of carbohydrate. Choose wholemeal bread rather than white as it is more nutritious and filling.
  • Potatoes – Baking potatoes are great value and versatile.
  • Porridge oats – cheap and it’s a really filling meal to start the day with. You could add some fresh or dried fruit for variety.
  • Beans and lentils – cheap to buy and a small amount goes a long way! Canned varieties can make a quick and nutritious addition to soups and stews. Lentils and beans can be used as a main meal with vegetables added. Baked beans on toast is a classic and is actually a very healthy dish, especially if you use wholemeal bread, and low fat spread.
  • Vegetables and fruit – can add vegetables to curries, soups, stir fries. Canned and frozen vegetables can be used as additions to last minute meals. Fruit is excellent for a quick nutritious snack. We should be eating at least 5 pieces of fruit and vegetables per day.
  • Condiments – add taste and flavour to your cooking. Keep a selection of dried herbs, spices, curry powder, vinegars, tomato sauce, soy sauce and stock cubes in your cupboard.
  • Tinned tomatoes – these can form the base of all sorts of sauces, are low in fat and count as a portion of your fruit and vegetables.
  • Chicken – chicken seems to be of better value if you buy in larger quantities. If you’ve got a freezer you could chop it up and freeze it in small amounts.
  • Eggs – are easy to cook and versatile.
  • Canned fish – Mackerel, sardines and pilchards are good sources of protein and omega 3 fatty acids.
  • Milk – full of calcium and vitamins and is healthy drink at any time of the day. Choose semi-skimmed or skimmed milk for a lower fat option.

 

Leek and Potato Soup

Monday, September 26th, 2011

Serves 6

 

Ingredients –

1 tbsp low fat spread

1 large onion, finely chopped

500g leeks, finely chopped

500g floury potatoes, peeled and chopped

3 tbsp chopped fresh parsley

1 litre of hot vegetable stock

300ml skimmed milk

Salt and freshly ground pepper

 

Method –

  1. Melt the low fat spread in a large, lidded, non stick saucepan and gently sauté the onion and leeks until soft, about 10 minutes.
  2. Add the potatoes, parsley and hot stock and bring to the boil. Cover and reduce the heat. Simmer gently for about 20 minutes.
  3. Add the milk to the saucepan and reheat gently. Season to taste and serve garnished with parsley sprigs.

 

Tips for Eating Less Fat

Monday, August 29th, 2011

Eating too much fat increases amongst other things your risk of heart disease and encourages weight gain.

Research has shown that our diet generally contains too much fatty food and that we can all benefit from eating less fat.

Instead of getting our energy from starchy foods (carbohydrates) like bread and potatoes, we rely too much on foods that are high in animal fats such as red meat, butter and cheese.

 

Tips for reducing fat intake:

  • Choose lean meat. Trim all visible fat from meat and poultry prior to cooking.
  • Choose low fat milk; choose semi-skimmed or skimmed milks.
  • Choose low fat yoghurts.
  • Choose low fat spread.
  • Fry very occasionally using olive, sunflower or rapeseed oil. Choose grilling or baking instead.
  • Beware of the hidden fats in biscuits, cakes, chocolate, pastry and savoury snacks. Always read your food labels.
  • Fill up on fruit and vegetables.
  • Look out for low fat snacks, low fat yoghurt and fruit.
  • Use oven chips rather than fried.

The Truth About Crash Diets

Monday, August 15th, 2011

If you are overweight, you probably know that you need to change, but a crash diet is never a good idea.

The simple fact is that you may be able to maintain a crash diet for a short period, however there is a significant likelihood that you will soon regain the weight, returning to your pre-crash diet weight.

Here are some of the reasons why crash diets don’t work -
The body reacts to the severe reduction in calories by reducing its metabolic rate.

In simple terms, the body reduces the amount of energy required for normal functioning when it is starved of food. This slows down the rate at which calories are ‘burned up’ meaning that if you significantly reduce your food intake, your body simply burns fewer calories.

When more energy is required by your body for metabolic and other functions, (these are the basic functions of your body, breathing etc). The body will simply burn muscle tissue, rather than fat.

Research shows that most people who embark upon a very low calorie diet may lose weight rapidly, but fail to sustain the weight loss over the medium-long term.

Instead you should aim You to set realistic targets to avoid failure and achieve successful weight loss.

Chicken Satay Skewers

Sunday, July 31st, 2011

Serves 4

Ingredients -

350g chicken breast, chopped into bite sized pieces

1 garlic clove, crushed

2 tbsp dark soy sauce

1 tsp dried chilli flakes

2 tbsp crunchy peanut butter

1 tbsp tomato puree

100ml pineapple juice

 

Method -

  1. Place the chicken in a shallow dish.
  2. Mix together the garlic, soy sauce, chilli flakes, peanut butter, tomato puree and pineapple juice. Pour the mixture over the chicken and toss well to coat all of the chicken pieces. Cover and leave to marinate for 30 minutes.
  3. Preheat the grill to high. Place the chicken pieces onto wooden skewers. Put them under the grill for 15 minutes, turning frequently, until evenly browned and cooked through.

 

Eating for a Healthy Heart

Monday, July 18th, 2011
  • Eat fewer fried and fatty foods such as cream, butter, full-fat dairy products, fatty red meat, cakes, biscuits and takeaways – and find lower-fat alternatives instead.
     
  • If you have to use oil, go for one that is packed with monounsaturates such as olive oil or rapeseed oil.
     
  • Eat five servings of fruit and vegetables every day – they are low in fat and calories but will help to fill you up.
     
  • Go for high-fibre carbohydrates such as wholemeal bread, wholegrain cereals, brown rice and wholewheat pasta. They are far more filling than the white stuff.
     
  • Start your day with a bowl of porridge.
     
  • Use a little less meat in dishes like stews, soups and casseroles and add barley, lentils or beans instead.
     
  • Eat oily fish once a week. Lunch on sardines with toast or serve salmon for dinner.
     
  • Slash the salt content of your diet – check salt levels before you buy.
     
  • If you drink, stick to sensible limits – that means no more than 3-4 units a day for men and 2-3 units daily for women.