Wednesday, 7 May 2014
ON WHAT TO EAT - 3
* FATS & OILS *
We have been made suspicious of foods containing fats or oils and been driven to thinking we should avoid cooking with them or adding them to our meals as if they were a kind of poison.
The truth is, we need a certain amount of "fat" in our diet. It's interesting to carefully read the following extract from a cookery book published in the 70"s used as a teaching aid in my GCE Domestic Science lessons :
FATS : Supply a concentrate source of energy as each gram
of fat supplies 9 kilocalories. Any fat that is not immediately
used for energy will be stored around the body. This provides
an insulating layer under the skin and protects the organs and
nerves. The fat soluble vitamins A and D are found in the fat-
containing foods.
Half the fat that we eat is derived from visible sources - margarine,
butter, vegetable oils and fatty meat. The other half is obtained as
part of of major foods - milk, cheese, eggs, fatty fish and baked
goods.
- from The New Art of Cooking
published by the Stork Cookery Service
The three interesting facts that I extract now from this description are :
1 - Fats are a source of energy
2 - Stored fat protects our organs & nerves
3 - Fats & oils contain vital vitamins
4 - Meat & some fish were/are regarded as major sources of fat in the diet.
Since this book was written, diets have changed considerably. We buy a lot of our food rather than make it & therefore feel less in control of how much fat & oil our diets contain. Health officials worry and the Government and media amplify their concerns that there is an " obesity epidemic" which puts us in fear of eating in case we catch this disease ! As a result, many people seem to live their lives on a permanently restricted diet, either trying to reduce their weight or keep a strict control of it and seem to live in fear of hidden fats - not without some justification it seems.
Fats and oils are what makes our food "yummy". They give it body and satiate our hunger. If we eat a meal containing an appropriate amount of oil or fat, we feel full more quickly. We are therefore less likely to overeat.
Whilst we should be aware of the amount of fat and oil our diet contains, especially in shop-bought foods, we should also be aware that :
CERTAIN TYPES OF FAT ARE ESSENTIAL TO LIFE
If we try to severely limit fats & oils in our diet over a long period of time we risk seriously damage our health and brain function.
Friday, 31 January 2014
ON WHAT TO EAT - 2
I'll go through the main components of food we should eat each day to show how our bodies use them and which foods provide them in a meat-free diet.
* PROTEIN *
Usually dubbed " the building block " because all our body tissues; skin, hair, blood, muscle & internal organs are made from it. It is essential for their growth & repair and for the formation of hormones, enzymes and antibodies.
Protein is made up of 22 amino acids. 14 of them can be made by the body if it has the right components. 8 are considered "essential" in that our bodies can't synthesise them, so we must consume them on a daily basis in order to remain healthy. Just for fun, as they have interesting names, I'll list them :
Tryptophane
Lysine
Methionine
Phenylalanine
Threonine
Valine
Leucine
Isoleucine
It comes as no surprise that animal protein has all these in roughly the same proportion as our own bodies. This is why people find it reassuring & convenient to eat meat & dairy products & the protein from these sources was once considered superior to plant proteins.
Plant proteins do contain the essential amino acids, but usually in different proportions to our own body proteins. To get a sufficient quantity of these important amino acids, vegetarians & especially vegans must eat a good enough variety of foods throughout the day to supply them all adequately.
Interestingly, some familiar dishes which have been eaten for hundreds of years combine plant based foods which together supply all these amino acids in good proportions:
Rice & Dal
Tortillas & Chili Beans
Tofu & Rice
Peanut Butter on Wheat Bread
In these common combinations, the amino acid deficiency of one food is compensated for by the other food. For example, legumes ( beans & pulses ) are low in methionine, whereas grains are rich in them. Grains are low in lysine, but legumes have this in abundance.
Nutritionists no longer think you have to balance your amino acid intake at one sitting. As long as we eat a variety of foods throughout the day, our bodies will take what is required from them.
Some plant foods do supply all the essential amino acids in good proportions & are even considered better sources of "complete" protein than meat :
Soy beans & soy products
The "germs" of grains e.g. wheatgerm
Brewer's yeast
Some nuts are considered excellent sources of protein & a grain eaten in Bolivia & Peru called quinoa is a perfectly balanced protein apparently.
If we base our main meals around beans, lentils, soy products , nuts or grains, incorporating plenty of fresh veg. & ensure our snacks, for the most part, supplement our diet, we can be sure of getting not just enough protein but probably all the other nutrients we need too.
It's generally agreed that as an overall guide, adults need around 50 to 60grams of protein a day. This varies of course. A pregnant or breastfeeding woman will need at least 10grams more. Someone who is very active or doing a lot of heavy work also needs more. Some vegans maintain their health on an average of 40g.
Rose Elliot, a well respected vegetarian cookery writer, lists foods supplying useful amounts of protein :
Foods Supplying approx 10g of Protein :
40g Cheddar cheese
275ml ( 1/2 pint) skim or soy milk
50g almonds
cashew nuts
70g Brazil nuts
35g Peanuts
40g Peanut butter
200g Low fat yoghurt
1 Large egg
50g haricot beans ( a small tin of baked beans )
50g Lentils
Foods Supplying approx. 5g of Protein :
100g Tofu
25g Sesame seeds
25g Sunflower or Pumpkin seeds
50g Walnuts
1 Medium potato ( 225g)
2 Slices of wholemeal bread
50g Brown rice
40g Oats
50g Pasta
40g Weetabix
40g Meusli mix
50g Wholemeal flour
All the weights are dry weights
We should remember that all foods contain all the amino acids, even lettuce ! Just not in very large quantities.
QUORN
Quorn is a complete protein in that it is made up of all the essential amino acids in good proportions for our bodies to make use of without all the fat & undesirable elements that come with meat.
Quorn is recommended by the vegetarian society, but not by the vegan society since it contains egg white as a "binder".
It's a great addition to the vegetarian diet, but it is, after all, manufactured, so although it's useful for providing a good protein base, it doesn't contain all the additional nutrients that beans, nuts & pulses do, and it's probably a good idea not to rely on it too much. In my opinion, using quorn for about 3 out of 7 main meals of the week would be a good balance.
There have been reports of some people having an allergic reaction to quorn & for this reason, we should consult guests before serving it to them. It seems to affect some people who cannot tolerate mushrooms very well and so should also probably be left out of a small child's diet until they are about 2 and a half, then introduced gradually, watching for any reaction, as with other foods such as egg and peanuts.
MEALS
Rose Elliot recommends that we plan each meal around a protein food, " adding a good serving of vegetables or fruit, with potatoes, bread or rice as required" .
If we eat a traditional breakfast of cereals or toast with a nut spread, a lunch & evening meal providing at least 10 - 15 g of protein, topping up with nutritious snacks like a handful of nuts, fruit, hummus & crackers or pitta, maybe a flapjack or piece of wholemeal cake, we should easily meet our protein needs. If we are doing a lot of physical work, sport, are recovering from injury or an operation, or are pregnant, we could introduce another snack, perhaps in the late afternoon or at supper-time to give our bodies the protein boost it requires.
TIPS FOR HEALTH
Our protein requirements, as with all our nutritional needs, fluctuate throughout life. If we eat in a way that suits our bodies, making gradual adjustments to maintain or even increase our health, we can use early indicators such as our hair, nails & skin to see if our diet is supporting us adequately. Good early clues that our diet is a bit protein-deficient is if our nails break easily, our hair seems a bit brittle, or minor cuts don't seem to heal quickly.
FURTHER READING
Rose Elliot's Mother & Baby Book
Thursday, 30 January 2014
ON WHAT TO EAT
Notes for my children - & anyone else who might be at all interested
"It is always dangerous to ignore the suffering of any living being, of whatever species, even if we think it necessary to sacrifice an animal for the benefit of the majority. To deny the suffering involved, or to avoid thinking about it, is a convenient solution, but such an attitude opens the door to all kinds of excesses as we witness in wartime. It also destroys our own happiness. As I often say, sympathy and compassion always end up proving beneficial."
- The Dalai Lama
Being vegetarian is :
Compassionate - both for animals & those who work with them.
Sustainable - it takes thousands more litres of water to produce
a kilo of beef than to grow the same quantity of grains
vegetables or pulses.
Healthy - a balanced vegetarian diet is one of the healthiest ;
high in all those vitamins, minerals & other elements
such as fibre now universally accepted as good for
health & low in the saturated fats now known to
cause many health problems.
With thanks to the Vegetarian Society's excellent
on-line site.
*
Deciding what to eat can be fun & interesting. If we plan a little ahead, it allows us to think about what we like to eat, how we can make it healthy & fit into our budget.
The basis for a good diet is the same for everyone. Over the course of the day, we should eat some foods containing these elements :
PROTEIN
CARBOHYDRATE
FATS
VITAMINS
MINERALS
WATER
The concerns of some people who have little or no experience of being vegetarian are about protein, iron, calcium & iodine, vitamin B12 & vitamin D . This is because most people rely on meat, fish and animal "products" such as milk and eggs to provide these elements and if we exclude them from our diet, or restrict our dairy intake, we have to take care to make sure we provide an adequate alternative source.
Whilst we should be reassured by the fact that there are many cultures around the world who don't eat meat and have survived countless generations , we should also be aware that their long history of not eating meat has involved handing down knowledge of what to eat to sustain health & bring up healthy children . If we lack this embedded knowledge & have no family tradition of being vegetarian, we have to devise our own. We must learn about our bodies' needs, which available foods can provide them & how to prepare a meal we can afford - & actually want to eat !
" A new vegetarian is like an adult learning a second language "
- Sharon Yntema " Vegetarian Baby "
Which brings me to understanding food :
*
Notes for my children - & anyone else who might be at all interested
"It is always dangerous to ignore the suffering of any living being, of whatever species, even if we think it necessary to sacrifice an animal for the benefit of the majority. To deny the suffering involved, or to avoid thinking about it, is a convenient solution, but such an attitude opens the door to all kinds of excesses as we witness in wartime. It also destroys our own happiness. As I often say, sympathy and compassion always end up proving beneficial."
- The Dalai Lama
Being vegetarian is :
Compassionate - both for animals & those who work with them.
Sustainable - it takes thousands more litres of water to produce
a kilo of beef than to grow the same quantity of grains
vegetables or pulses.
Healthy - a balanced vegetarian diet is one of the healthiest ;
high in all those vitamins, minerals & other elements
such as fibre now universally accepted as good for
health & low in the saturated fats now known to
cause many health problems.
With thanks to the Vegetarian Society's excellent
on-line site.
*
Deciding what to eat can be fun & interesting. If we plan a little ahead, it allows us to think about what we like to eat, how we can make it healthy & fit into our budget.
The basis for a good diet is the same for everyone. Over the course of the day, we should eat some foods containing these elements :
PROTEIN
CARBOHYDRATE
FATS
VITAMINS
MINERALS
WATER
The concerns of some people who have little or no experience of being vegetarian are about protein, iron, calcium & iodine, vitamin B12 & vitamin D . This is because most people rely on meat, fish and animal "products" such as milk and eggs to provide these elements and if we exclude them from our diet, or restrict our dairy intake, we have to take care to make sure we provide an adequate alternative source.
Whilst we should be reassured by the fact that there are many cultures around the world who don't eat meat and have survived countless generations , we should also be aware that their long history of not eating meat has involved handing down knowledge of what to eat to sustain health & bring up healthy children . If we lack this embedded knowledge & have no family tradition of being vegetarian, we have to devise our own. We must learn about our bodies' needs, which available foods can provide them & how to prepare a meal we can afford - & actually want to eat !
" A new vegetarian is like an adult learning a second language "
- Sharon Yntema " Vegetarian Baby "
Which brings me to understanding food :
*
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