Tampilkan postingan dengan label Linseeds. Tampilkan semua postingan
Tampilkan postingan dengan label Linseeds. Tampilkan semua postingan

Jumat, 06 Februari 2009

Food Porn.

It's the only porn you're going to get on this Blog!

I was looking at Richard Nikoley's Blog at http://freetheanimal.com/ and I couldn't help but notice all of the pictures of yummy food on it. When I mention to people that I am on an "Atkins-style" diet, they usually say "Oh, so all you eat is bacon & eggs and those expensive low-carb bars, right?" I have yet to buy a low-carb bar.

This post should give you an idea of what I eat. Some of my meals contain Burgen soya & linseed bread and even sweetcorn. These foods are relatively high in starchy carbohydrate, but my body can tolerate them thanks to Vitamin D.

The first picture is what I often (but not always, as variety is important) have in the morning. It's basically coffee with extra oomph provided by a 60cc scoop of powdered linseeds (in the storage jar) and a 60cc scoop of unflavoured whey protein (a milk protein). Vanilla flavouring, brown sugar & Splenda improve the flavour of this concoction, which has the consistency of wallpaper paste!


I do eat bacon & eggs but not for breakfast. I usually have it for lunch, accompanied by chopped onions & mushrooms microwaved with Losalt, Lee & Perrins & Extra-Virgin Olive oil. A big squirt of tomato ketchup gives me my third portion of vegetables! The whole lot sits on top of a slice of Burgen toast.


For afternoon tea, I may have something salmony. Here's a simple smoked salmon sarnie made with ~100g of smoked salmon and a couple of slices of raw onion.


I have a friend who hates the skin & bones in tinned salmon. As this is where a lot of the omega-3 fat & minerals are, I tried an experiment to see if I could disguise them. I blended a 213g tin of wild red salmon with a couple of dollops of Hellman's Real Mayonnaise & a little "juice" from a tin of sweetcorn. I then mixed sweetcorn with the salmon mayonnaise. I dumped a load of the salmon & sweetcorn mayonnaise mix onto a slice of Burgen buttered with Anchor. A little sliced tomato & cucumber completed the ensemble.


Sometimes. I just dump everything on a plate!


For supper, I usually microwave something meaty with something vegetably. Here are some Somerfield "Best Ever" Pork & Chorizo sausages microwaved with chopped onions & mushrooms in a Lea & Perrins-based gravy.


Here's an Aldi quarter-pounder beefburger with microwaved chopped onions, mushrooms & English mustard.


Here's an Aldi chicken jambonette in a sun-dried tomato, balsamic & sweet basil sauce microwaved with peas & mixed veg. The sauce went everywhere!


Here's an Aldi lamb shank in a mint & red wine-flavoured sauce. The shank was in a bag, so the sauce didn't go everywhere when I microwaved it on the plate alongside the peas & mixed veg. The vegetables look a little strange as I microwaved them as they were with a little Losalt (and no added water), but they tasted just fine. Not adding any water means that there is no loss of minerals.


And finally, here's an Aldi pork shank in sweet & sour sauce cooked as per the lamb shank. Aldi have a lot of different varieties of chicken jambonettes, lamb & pork shanks and I will be trying them out as they are very reasonably priced.


So, can I spend the rest of my life on this sort of diet? Oh, yes yes yes yes yes!

Selasa, 27 Januari 2009

The Protein-Sparing Modified Fast (PSMF)

As promised, I shall discuss the PSMF (I was going to have a whinge about the sudden loss of ability to watch "Neighbours" on Demand Five using Firefox, but I'll save that for another time if Demand Five Support don't fix the problem).

What's a PSMF?

A standard PSMF is ~1g of protein for every kg bodyweight a day plus lots of green leafy vegetables plus six to ten fish oil capsules a day plus vitamin & mineral supplements plus unlimited water AND NOTHING ELSE. You may find this quite literally hard to swallow! PSMF may also stand for Protein Strictly , Mother-F***er! A 100kg person (e.g. me) may get to eat ~400kcals from protein + ~100kcals from incidental carbohydrates & fats = ~500kcals a day. Hear that rumbling noise? It's my tummy! A well-known PSMF is Lyle McDonald's Rapid Fat Loss Handbook.

For more information, see http://forums.lylemcdonald.com/forumdisplay.php?f=7 and Is Rapid Fat Loss Right For You?

To make a PSMF easier to manage (but have a slower rate of weight loss), here are some modifications:-

1) Instead of six to ten fish oil capsules a day, stir ~25g of powdered linseeds into a large glass of drink and swallow the lot. Do this at breakfast-time. 25g of linseeds contains ~10g of fat (of which ~6g is Alpha-Linolenic Acid, an omega-3 fatty acid) which does the following:-

a) It stimulates the gall-bladder to empty, thus reducing the risk of gallstones.
b) It usually results in a bowel movement some time later. The ~10g of soluble fibre/fiber in the linseeds + accompanying fluid guarantees regularity.
c) It provides women (but not men) with all of the omega-3 fat they need each day.

Men need to eat either half a 213g tin of wild red salmon a day or six to ten fish oil capsules a day as their bodies don't produce enough DHA from Alpha-Linolenic Acid. See Extremely Limited Synthesis of Long Chain Polyunsaturates in Adults: Implications for their Dietary Essentiality and use as Supplements

2) Eat about 100g of protein a day. As meat, poultry & fish contains 20-25% protein, this means that you can eat ~1lb of meat, poultry & fish a day. 100g of protein a day is well within the capabilities of your liver and kidneys.

3) Eat about 44g of fat a day. This allows you to choose less lean cuts of meat & poultry and you can even eat the skin on chicken as long as you factor it into your total fat allowance. It also allows you to use vinaigrette salad dressings or a knob of butter or a dollop of real mayonnaise to make your vegetables taste nicer.

4) Eat about 50g of carbohydrate a day. This allows you to eat shed-loads of leafy green vegetables and also an onion. It also allows you to eat a portion of fruit e.g. an apple or a bowl of berries/cherries with Splenda & a dollop of whipped cream each day.

5) If you do any intense exercise (e.g. HIIT or resistance training with weights), eat an extra 50g of slow-release carbohydrates a couple of hours beforehand to fuel it.

6) Supplement with 5,000iu/day of Vitamin D3. Nowadays, many of us spend our lives mostly indoors and this causes many of us to become deficient in Vitamin D. Please read Vitamin D.

In conclusion:

100g of protein provides 400kcals, 44g of fat provides 400kcals and 50g of carbohydrate provides 200kcals, making a grand total of 1,000kcals a day. Hopefully, this will be enough to stop your tummy from rumbling. If you weigh over 100lbs but aren't losing weight on 1,000kcals a day, see your GP as you may have a thyroid problem.

I believe that the above diet tackles the problems of gallstones, constipation, dry skin, dry hair, depression and dietary deficiencies. You get to eat real food and quite a lot of it too, for a fairly rapid fat loss diet.

Sabtu, 10 Januari 2009

Linseeds/Flaxseeds & Flaxseed oil.

"Where flax is eaten...health abounds!" - Mahatma Ghandi.
These little seeds pack a quadruple-whammy of protein, omega-3 essential fatty acids (EFAs), soluble fibre/fiber, and minerals, vitamins and co-factors.


What's in flaxseeds and flaxseed oil?

Click http://www.nutritiondata.com/facts/nut-and-seed-products/3163/2 and set serving size to 100g to see what nutrients there are in flaxseeds.
Click http://www.nutritiondata.com/facts/fats-and-oils/7554/2 and set serving size to 100g to see what nutrients there are in flaxseed oil.


How do I eat flaxseeds and flaxseed oil?

Flaxseeds have a fibrous seed coat which swells-up when wet and passes through our guts undigested. To get the benefit of the protein, omega-3 essential fatty acids and minerals in flaxseeds, the seeds need to be crushed, cracked, chopped-up, sliced-up or ground-up using a coffee grinder, adjustable pepper grinder or most simply, a blender with a sharp blade. The resulting powder can be mixed with liquids or sprinkled on foods, though extra fluid must be drunk as the soluble fibre/fiber absorbs lots of water. Although whole flaxseeds will keep fresh at room temperature, once powdered, it's advisable to keep them in a cool dark place to minimise oxidation of any exposed fat*. Flaxseed oil must be kept refrigerated with the cap screwed on the bottle at all times after opening and it must never be used for cooking. It's O.K. sprinkled over hot food as long as the food is eaten shortly afterwards. Oxidised flaxseed oil tastes bitter and has lost any health benefits it had when fresh, so it should be discarded or used to varnish something or thin down putty. Unoxidised flaxseed oil has a nutty taste or it may taste slightly like tea. Ground-up flaxseeds hardly taste of anything.
*NEW! Milled flaxseed stability information.


How much flaxseeds and flaxseed oil do I need to eat each day?
Men are much poorer converters of alpha-linolenic acid (the omega-3 fatty acid in flaxseeds) into the longer-chain omega-3 fatty acids than women. See Eicosapentaenoic and docosapentaenoic acids are the principal products of α-linolenic acid metabolism in young men , Conversion of α-linolenic acid to eicosapentaenoic, docosapentaenoic and docosahexaenoic acids in young women and Extremely Limited Synthesis of Long Chain Polyunsaturates in Adults: Implications for Their Dietary Essentiality and Use as Supplements. Therefore, vegan men should eat ~50g of ground flaxseeds a day and women should eat ~25g a day. The daily amount of flaxseed oil for men is ~20g and the daily amount for women is ~10g. Vegan men should also supplement with vegan DHA.


Where can I buy flaxseeds and flaxseed oil?
Flaxseeds/linseeds come in different colours. The cheapest linseeds are brown/bronze ones which are often sold as bird seed in pet shops, but they can also be found in small independent health food shops. There are also golden linseeds, which is the type most often found in supermarkets. Linusit and Granovita are two well-known brands. Granovita organic flaxseed oil is a good brand and it comes in dark bottles to keep the light out as light causes photo-oxidation of omega-3 fatty acids.

Rabu, 07 Januari 2009

Vegetarians & vegans, listen up!

Firstly, by vegetarian I mean someone who does not eat the flesh of animals. This includes fish and chicken.

Dr. Michael Greger M.D. ("The Vegan MD") has a very informative and witty lecture Optimum Vegetarian Nutrition: Surprising New Research on Omega 3's and B12.

In a nutshell, vegetarians & vegans don't live any longer than omnivores – as shown in a study of 28,000 subjects. Vegetarians & vegans have the same rates of coronary heart disease as omnivores but double the rates of Alzheimer's Disease. WHY? There are two reasons.

1) Vegetarians and vegans don't eat oily fish and most don't eat cracked or ground-up linseeds either. This means that the ratio of omega-6 to omega-3 fats in their diet is way too high. This increases the risk of diabetes, certain cancers and heart disease.

2) Only animal produce naturally contains Vitamin B12. Lack of B12 in the diet raises the level of homocysteine in the blood, which attacks artery walls. This raises the risk of heart disease and Alzheimer's Disease. What to do?

1) Eat 25g (women) or 50g (men) of powdered brown or golden linseeds per day or add 10g (women) or 20g (men) of flax-seed oil to food per day or take 10 (women) or 20 (men) 1000mg flax-seed oil capsules per day. Or supplement with ~1000mg/day vegan DHA.

2) Eat foods fortified with vegan B12 or supplement with vegan B12.

'Nuff said?

Senin, 05 Januari 2009

I was just thinking......

On a messageboard in a galaxy far far away, someone suggested that as many as one in three people in the UK could have impaired carbohydrate metabolism. This set me thinking.

London is 51degrees North of the Equator, so the sun has to pass through ~45% more atmosphere to reach us, compared to the Equator.

According to Elina Hyppönen & Chris Power, (edited) "The prevalence of hypovitaminosis D was highest during the winter and spring, when 25(OH)D concentrations less than 75nmol/L were found in 87.1% of participants, respectively; the proportion was 60.9%, respectively, during the summer and autumn."

Note that 75nmol/L was insufficient to give me normal Insulin Sensitivity. See Chiu, Chu, Go & Saad. However, greater than 160nmol/L was sufficient, but that was only obtained after I supplemented with 5,000iu/day of Vitamin D3 (25 x RDA).

A deficiency of omega-3 EFAs can cause Insulin Resistance (poor Insulin Sensitivity). See Ghafoorunissa, Ahamed Ibrahim, Laxmi Rajkumar & Vani Acharya, Storlien LH, Kraegen EW, Chisholm DJ, Ford GL, Bruce DG & Pascoe WS and Yam D, Bott-Kanner G, Friedman J, Genin I, Klainman E & Shinitzky M.The typical omega-6:omega-3 ratio in the British diet is ~15:1. This is partly due to the fact that animal produce from grain-fed animals contains a lot more omega-6 and a lot less omega-3 than it used to. See Is food less nutritious than it used to be? Andre Purvis investigates. In addition, people eat grains, nuts, seeds, oils & spreads high in omega-6 and don't eat much oily fish, powdered Flax-seeds (a.k.a. Linseeds) or Purslane (a plant that's relatively high in omega-3).

With all of these problems, I wonder what percentage of the UK population actually do have some degree of impaired carbohydrate metabolism?
It might be more than one in three.

According to The eatwell plate, one third of our total Calories are supposed to come from bread, rice, potatoes, pasta and other starchy foods. All of these foods raise blood glucose. Impaired carbohydrate metabolism makes for roller-coaster blood glucose levels which encourages over-eating, leading to obesity (see my Blog post on Blood Glucose, Insulin & Diabetes.)

I think that that's enough thinking for now.

Senin, 22 Desember 2008

Fats: Spawn of Satan or Dogs' Doodads?

Fats get a lot of bad press in the media. There are so many adverts with "X% fat-free" or "only 1g of fat per Jaffa Cake" as if that's going to stop you from getting fat when you "om nom nom" your way through a whole box of the things!

Saturated fats are usually described as "bad" and polyunsaturates are usually described as "good". This is simplistic. Everything is bad in excess, even polyunsaturates. The thing about fats is that there are four basic types (saturates, monounsaturates, omega-6 polyunsaturates and omega-3 polyunsaturates) and they need to be consumed in roughly the right proportions for optimum health. Suffice it to say, the majority of people in the West do not eat them in anywhere near the right proportions. So, what exactly are fats?

Fats

Fats are an ester of glycerol and three fatty acids and are also known as triglycerides or triacylglycerols.

1 molecule of glycerol + 3 molecules of fatty acid = 1 molecule of triglyceride + 3 molecules of water.

It's the fatty acids that determine whether a fat is sat, mono etc. The four different types of fatty acid all have a CH3 at one end and a COOH at the other. The difference is in the middle section.

Saturated fatty acids have a middle section consisting of all CH2's. Here's a diagram for Stearic acid (the predominant fatty acid in beef):-

__
H H H H H H H H H H H H H H H H H OH-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-O-H__H H H H H H H H H H H H H H H H HMonounsaturated fatty acids have one C=C bond in the middle, which is usually (but not always) 9 from the left-hand end resulting in monounsaturates usually being referred to as omega-9's, as omega is the letter at the end of the Greek alphabet. Here's a diagram for Oleic acid (the predominant fatty acid in olive oil):-

__H H H H H H H H_____H H H H H H H OH-C-C-C-C-C-C-C-C-C=C-C-C-C-C-C-C-C-C-O-H__H H H H H H H H H H H H H H H H H

Omega-6 polyunsaturated fatty acids have two or more C=C bonds in the middle with the last one always being 6 from the left-hand end. Here's a diagram for Linoleic acid (the predominant fatty acid in sunflower oil):-

__H H H H H_____H_____H H H H H H H OH-C-C-C-C-C-C=C-C-C=C-C-C-C-C-C-C-C-C-O-H
__H H H H H H H H H H H H H H H H H

Omega-3 polyunsaturated fatty acids have three or more C=C bonds in the middle with the last one always being 3 from the left-hand end. Here's a diagram for Alpha-linolenic acid (the predominant fatty acid in flax-seed oil):-

__H H_____H_____H_____H H H H H H H OH-C-C-C=C-C-C=C-C-C=C-C-C-C-C-C-C-C-C-O-H__H H H H H H H H H H H H H H H H H

These diagrams are slightly misleading. Where there is a C=C bond, there are two H's on the "underside" only of the molecule. This asymmetry causes the H's to repel each other and bend the molecule into a V-shape at each C=C bond. C=C bonds with H's on the same side are known as "cis" bonds. The above molecule is really cis, cis, cis (c,c,c) Alpha-linolenic acid. The other type of C=C bond is known as "trans" and looks like the following diagram:-

__H H H___H H___H H___H H H H H H H OH-C-C-C=C-C-C=C-C-C=C-C-C-C-C-C-C-C-C-O-H
__H H___H H___H H___H H H H H H H H

This is a diagram of trans, trans, trans (t,t,t) Alpha-linolenic acid. As the H's are on opposite sides of the molecule, they do not repel each other and the molecule is straight as shown above. Note that saturated fatty acid molecules are naturally straight. Therein lies the problem with trans-fatty acids. They're straight, like saturated fatty acids but have unsaturated bonds which are prone to oxidation. See http://www.cyberlipid.org/perox/oxid0002.htm WARNING! Heavy-duty organic chemistry!

Our bodies take trans-fatty acids and incorporate them into cell membranes as if they were saturated fatty acids. This results in atherogenicity (artery-clogging), damage to the immune system and other health problems. Trans-fatty acids are found in partially-hydrogenated vegetable oils and so any processed foods or cooking/spreading fats which has the word "hydrogenated" high-up in the ingredients list should be avoided. These truly are bad fats. There are also naturally-occurring trans-fatty acids made by bacteria in the stomachs of ruminant animals, like Conjugated Linoleic Acid (CLA). This looks a bit like the diagram below:-

__H H H H H_____H___H H H H H H H H O
H-C-C-C-C-C-C=C-C=C-C-C-C-C-C-C-C-C-C-O-H
__H H H H H H H___H H H H H H H H H

This has one of the C=C bonds shifted to the left and also has one cis bond and one trans bond, so the molecule is always bent. CLA has possibly beneficial properties but medical studies show mixed results. It's certainly not artery-clogging, so don't let anyone put you off eating butter from grass-fed cows (e.g. New Zealand butter) by saying that it has trans-fats in it. CLA is a harmless trans-fat.

Anyway, back to diet. Saturated fat consumption should be about 10% of total calories. This is because, even though sat fats are not essential (our bodies can manufacture them), this guarantees adequate levels of sex hormones in the body. Total polyunsaturate consumption should be about 5% of total calories, with a ratio of omega-6 (O6) to omega-3 (O3) of between 1:2 and 4:1. As O3's are only found in greater quantities than O6's in flax-seeds (a.k.a. linseeds) and oily fish, and many people eat way too little or no oily fish (and who, other than body-builders and some vegetarians/vegans, eats flax-seeds?), the O6:O3 ratio in the West is about 20:1. This is due to the widespread consumption of meats, eggs & milk from grain-fed animals, grains, nuts and seeds. So, it’s not surprising that there are high rates of heart disease and other inflammatory diseases in the West, as O6's end up in series 1 & 2 prostaglandins and series 2 prostaglandins are pro-inflammatory. O3 fats end up in series 3 prostaglandins, which are anti-inflammatory.

So eat up yer oily fish if you're not vegetarian or vegan. Otherwise, eat up yer ground-up flax-seeds!

Monounsaturates can make up 15% to 35% of total calories, depending on activity levels. Remember from the histogram in the Blog post Everyone is Different, sedentary people on average burn twice as much energy from fats as from carbs. So, if energy from protein is 25% say, 25% of energy can come from carbs and 50% can come from fats i.e. a 2:1 ratio of fats:carbs. The cyclists at the left-hand end of the histogram in Chapter 1 would do best on 25% protein, 5% carbs, 70% fat when sedentary, whereas the cyclist at the right-hand end of the histogram would do best on 25% protein, 60% carbs, 15% fat when sedentary. When active, more carbs are needed by everyone.

Which fats contain which fatty acids? See http://homepage.ntlworld.com/nigel.kinbrum/comparison-of-fats.gif for a Comparison of Dietary Fats chart. Click http://www.apag.org/oleo/fatsoils.pdf for tables of Properties & Composition of Vegetable & Special Oils and Properties & Composition of Animal & Marine Fats & Oils.

For high-temperature cooking, saturates are the least likely to oxidise (when they're on fire, they're oxidising!), followed by monos, then omega-6's with omega-3's being the least stable. An oil doesn't have to be smoking to be oxidising. Alpha-linolenic acid oxidises at room temperature, which is why linseed oil is used to varnish cricket bats and soften putty. The best non-animal fat for high-temperature cooking is Coconut Oil, followed by Palm Oil and then Olive Oil. Extra-Virgin Olive Oil (EVOO) has a lower smoking temperature than refined Olive Oil (due to higher levels of free fatty acids), but has higher levels of polyphenol antioxidants, which makes it pretty heart-healthy.

Oils high in polyunsaturates shouldn't be heated above 100°C, as polyunsaturates can change from the cis configuration to the trans configuration at temperatures as low as 102°C. See http://www.harricksci.com/sites/default/files/pdf/application_notes/FatIR_App-Notes_ATR_Oil-Analysis.pdf