Showing posts with label fats. Show all posts
Showing posts with label fats. Show all posts

14 January 2008

Kangaroo Meat – Good For You AND the Environment:

Kangaroo meat is one of natures many wonders. I know it sounds a bit bizarre, and if you don’t live in Australia probably very foreign, but the facts remains that Kangaroo meat is an excellent choice of meat. It is both nutritionally beneficial for humans as it as well as being far better for the environment than other livestock, specifically cattle, which is probably the most eaten meat and also happens to cause the most environmental damage. If you are an enlightened citizen and aware of the importance of both your own health and that of the environments then Kangaroo is certainly for you. Admittedly its flavour is rather gamey, but this need not be a barrier to eating it. While many find it a unique flavour at first but then quickly develop a a taste for it.

So why is kangaroo so nutritionally superior to other meats Sam? Well, Firstly kangaroo is an incredibly lean meat by nature (probably has something to do with the fact that kangaroos jump around a lot and eat grass and not grains, therefore not developing excess unneeded fat). However as I mentioned in “"Fats: The Good, the Bad & the Ugly as well as Potentially Life Threatening:” fats aren’t all bad. It’s the saturated and particularly trans fats that we have to avoid. Well almost all products which are in their natural form like fresh vegetables and fruit as well as meat will contain for all intensive purposes absolutely not trans fat. Fats found in natural produce tend to contain only limited amounts of saturated fat and more of the unsaturated fats (poly unsaturated and mono unsaturated), which makes them appropriate for a healthy diet. Many unprocessed animal products however have quite high amounts of saturated fat, and typically far less in the way of mono saturated fats. This also holds true for traditional dairy products.

Some meats such as chicken and turkey are very low in fat by nature. Certain cuts of beef can be lower in fat too, but generally speaking red meats as well as pork have higher amounts of fat than other meats. One great meat source is of course fish. Certain fish such as tuna, salmon and sardines not only contain very low amounts of saturated fat but also contain higher amounts of the healthier unsaturated fats including the now rather famous Omega-3. Omega-3 in itself has been proven to be an exceptionally amazing fatty acid and I have written a whole article entitled “Omega-3: Something Smells Fishy, What’s all the Hype About?”, due to its amazing health benefits.

Now Kangaroo is a particularly interesting meat in that it is both a red meat but also incredibly lean by nature. Not only that but the little fat it does have contains quite a substantial amount of the healthier unsaturated fats. Due to its overall low fat content however Kangaroo can be overcooked easily, and hence be tough. This will take some mastering but once you’ve got the hang of it a Kangaroo steak is treat to behold… or be-eat as the case may be. Obviously Kangaroo meat is an excellent source of protein and has particularly high levels of iron & zinc. It also has practically not cholesterol and contains a healthy fatty acid known as “Conjugated linoleic acid” (CLA). While essentially all of the things about Kangaroo meat are good for you the fact that it contains good amounts of CLA is particularly interesting. Don’t only take my word for it though take the CSIRO’s: http://www.csiro.au/files/mediarelease/mr2004/kangaroofat.htm! The CSIRO site also notes that the interesting thing is not only that Kangaroo’s have high levels of CLA, but so do most grass fed animals.

CLA intake has been shown to help in reducing body-fat and do a host of other beneficial things, even reduce the risk of getting cancer. Allow me to quickly site some references. This site, http://www.ncbi.nlm.nih.gov/pubmed/11725826?dopt=Abstract, explains how studies have linked CLA intake with lower bodyfat, yet similar bodyweight, hence not only helping humans to lower their body-fat but also increase their muscle mass. Of course the benefits would only be minor but it clearly indicates that Kangaroo is a very healthy choice of meat. Further more as http://www.adsa.org/jointabs/iaafs108.pdf explains:
“Research studies with animal models suggest that CLA reduces the risk of cancers at several sites (mammary tissue, prostrate, gastrointestinal tract, lung, and skin), reduces body fat and enhances growth of lean body mass.”

The same website (http://www.adsa.org/jointabs/iaafs108.pdf) also stresses that animals fed grain products produce less CLA. “Cows grazing on pasture had 500% more CLA content in milk compared with cows fed typical dairy cow diets containing conserved forage and grain in a 50:50 ratio.” It is indeed interesting to wonder whether feeding our primary meat sources (such as cattle) from grains instead of grass (which is what they would be naturally eating) has contributed to our obesity problem both through increasing the fat content in the cows and also through causing other changes such as the drastic drop in CLA found in grain feed cows.

Now if that’s not enough a reason to start eating Kangaroo maybe I should mention that Kangaroo’s cause far less damage to the environment than traditional meat sources such as cattle. See “Vegetarianism From a Different Perspective:” to see just how much a threat to global warming the meat industry alone causes to get an idea of what were comparing here. Firstly, realise that Kangaroos are farmed wild, which is also much more ethical. Secondly, realise that at the moment Australia has a heap of Kangaroos. While certain species are endangered most aren’t, indeed in some areas of Australia they are considered a pest. Hence Kangaroo farming began, more as a way to cull the kangaroo population than anything else. Unfortunately much of the meat has been used in pet foods as I don’t think the market for it is very big. However the market certainly should grow, especially given kangaroo’s wonderful nutritional properties.

Essentially as I argue in “Vegetarianism From a Different Perspective:” , cows create a butt load of methane (pun totally intended, even though I think a lot of it actually comes out their mouths). In contrast Kangaroos don’t, in fact their farts (or whatever you want to call them) are methane free. Hence eating kangaroos encourages fewer cattle to be eaten, which in turn makes for less cattle and reduces the output of deadly green house gasses (in the form of methane from cow farts. For those who don’t know Methane is in fact roughly 20 times more potent than carbon dioxide when it comes to speeding up global warming). But wait, it gets even stranger! Kangaroo fart happens to be so methane free (due to bacteria in their gut) that scientists are in fact trying to transfer these bacteria to cow’s intestine, essentially to make them fart like kangaroos, i.e. causing less methane. Check out: http://www.inhabitat.com/2008/01/03/scientists-to-make-cows-fart-like-kangaroos/ if you wish to see where I got this information from and be mildly amused.

Kangaroo’s are also in large numbers and its believed that they are fair game (pun again intended) at the minute. Seriously, kangaroo is great stuff. I hope I have at least convinced you to go to the supermarkets and try some. If you need just a little more convincing then I have just one more thing to say. Ironically enough, Kangaroo meat is really rather cheap. In fact it’s typically much cheaper than most other meats! If I recall correctly a kilogram of kangaroo mince at Coles costs you around $7 Australian, while a kilogram of lamb costs you closer to $30.

While Kangaroo meat does have an acquired taste some certainly find it to their liking. Others adapt. It can also be cunningly used in dishes like bolognese where its distinct flavour is blunted by herbs and other ingredients. As I have stated above it is incredibly good for you, indeed it is no doubt the best of all the red meats. The only meat I would rank higher for your health would probably be fish, but given mercury poisoning problems due to ever rising pollution levels even fish can now be quite contaminated. Not only is it good for you however, it is also beneficial for the environment. Lastly its not overpriced either. So go on, have Kangaroo for dinner tonight, after writing all this to persuade you of how good it can be for you its worth at least trying!

28 December 2007

Omega-3: Something Smells Fishy, What’s all the Hype About?

Omega-3: what is it, you ask? Where is it? Is it friendly? Why won’t everyone shut up about it, I mean fish really aren’t that interesting? Fear not children for all the essentials shall be revealed in this brief article.

Omega-3 is a polyunsaturated fatty acid. There, now that we have the technical definition sorted we can get down to business. Omega-3 is a type of fat, and one which is commonly associated for most people with seafood. Seafood often contains abundant amounts of omega-3 particularly certain fish such as Tuna and Salmon. It is also contained within various plant sources, most notably some nuts like: walnuts, flax seeds and hemp seeds. It is also found in small quantities in dark green leafy vegetables. Foods like broccoli and kale are, believe it or not, sources of Omega 3. Because of their low caloric levels however, large amounts must be eaten to obtain decent amounts of it.

Now there is currently a lot of hype around omega-3 and its benefits. Why exactly is this? Well until recently fat was severely stigmatised by nutritionists and the public alike. Only recently are we starting to realise that there are different types of fats which in fact play different roles and have differing effects upon the body. Omega-3 in particular has had some very interesting health benefits recorded.

Ironically enough when I first starting typing the idea for this article yesterday lunch I was eating tuna at the time. I certainly had a good smirk about it. Yet as I do the final edit of this article this morning there lies a copy of the Australian edition of the “Clinical Psychiatry News” (Vol. 3, No. 6) and despite it still being wrapped in plastic I can see on the front page a picture of some nice looking cooked fish and an article called “Postartum Depression” – the subheading simply says ‘Fish and omega-3 fatty acids may help manage postpartum depression.” Trust me Omega-3 is big at the minute, and with good reason, it seems to be having some remarkable results in scientific studies, lets investigate shall we.

Omega-3 is probably best known for its fat burning ability. Research has shown that it elevates the amount of fat burnt, particularly if it is taken after exercise. (For a related links see: http://www.fishoilblog.com/benefits/fish-oil-exercise-fat-loss.php)

Omega-3 has also been shown to help with cholesterol levels (as have other polyunsaturated and mono-unsaturated fats [known as the “good” fats], but omega-3 seems to do so even better than other “good” fats) by lowering blood triglyceride levels and increasing HDL cholesterol (the “good” cholesterol), in turn reducing risk of heart attack. It has also been shown to help lower blood pressure, and even to help cancer (here a reference for the unbelievers: http://www.sciencedaily.com/releases/2006/09/060920092447.htm)

But the benefits of omega-3 don’t end there, it gets even better! Studies on the effects of Omega-3 on the brain have yielded fascinating results. It seems that it can potentially help with a whole spectrum of mental problems from depression to schizophrenia, even problems like ADHD can be solved or at least the symptoms reduced by simple Omega-3 supplementation!

Why is this so you might ask? Simply put our brain is made up of cell membranes which are coated in a lipid solution (that is to say fat – lipid is the scientific name for fat), thus it makes sense that eating more fat gives your more structural material with which the body can build its structural links within the brain. However obviously not all fats are equal here as most westerners still eat tons of saturated fat, but don’t get these amazing effects. As I addressed in a recent article called "Fats: The Good, the Bad, and the Ugly as well as Potentially Life Threatening:” the type of fat you consume does matter, as it is utilised differently by the body. Think of it almost as different grades of material. Lets say you want to build a house and you’ve got one really strong durable wood and another really crappy weak and prone to rot wood, which would you use? Providing your intention was that the house was durable and lasted a while you’d use the better material. Now think of polyunsaturated and monounsaturated fats as higher grade materials for your brain to build itself with, whereas saturated fats and even worse, trans fats, are more like crappy material. There, now that I’ve gotten a really shite metaphor out of this article I may continue with the knowledge of a world of good done and another literary masterpiece accomplished.

Now honestly I’m not making all this stuff up, I am not prone to misinformation, so here’s one of a myriad of sources that essentially argue a similar line to myself: http://www.abc.net.au/catalyst/stories/s1691896.htm.

“It may seem unlikely that fish oil could help Thomas control his ADHD, but our brains are literally swimming in fat. Most of it’s in the cell membrane, and high levels of Omega 3 allow the brain cells to transmit electrical signals more effectively.
So could increasing your Omega 3 intake influence the very way we think and behave? At CSIRO Human Nutrition in
Adelaide, Natalie Sinn is attempting to find this out. She recruited 130 children with learning and behaviour difficulties, and set them tasks to test their attention. After more than 6 months on 6 fish oil capsules a day, around half the children showed improvement.”

It seems grandma was always right when she said eat your fish it’ll make you brainy. However the stereotype of fish being dumb seems to be dwindling. All those stories you were told about fish having 3 second memories… they seem to be unfounded fishist comments… damn those fishists. Ironically scientists now think fish aren’t so dumb after all:

http://news.bbc.co.uk/1/hi/england/west_yorkshire/3189941.stm

At very least they're tasty and seem to be very good four our brains! I personally think everyone should either eat fish several times a week, or take fish oil supplements, if not both!

Some relevant links:
http://www.buzzle.com/articles/the-beneficial-effects-of-fish-oil-on-the-heart.html
http://www.sciencedaily.com/releases/2007/12/071220082829.htm

http://www.abc.net.au/catalyst/stories/s1241479.htm


27 December 2007

Fats: The Good, the Bad & the Ugly as well as Potentially Life Threatening:

First let me enlighten those who are innocent, of the four major types of fats:

1) Trans Fats

2) Saturated Fats

3) Polyunsaturated fats

4) Monounsaturated fats

As a simple rule of thumb, don’t eat excessive amounts of fat, keep it moderate and make sure to eat most of your fat from the last two forms of fats (the Unsaturated groups), less from the saturated fats, and steer well clear of Trans fats. Believe it or not the type of fat does make a difference. An interesting calorie controlled study on monkeys showed that a group eating the same diet but with their fat coming from Trans Fats gained more fat than the control group eating unsaturated fats and that the trans fat group also gained more fat around the abdominal area (which is associated with an increased chance of heart disease).

Here are a couple of extracts from: http://www.newscientist.com/article.ns?id=dn9318

“Monkeys fed a diet rich in trans-fats – commonly found in fast foods – grew bigger bellies than those fed a diet rich in unsaturated fats, but containing the same overall number of calories. They also developed signs of insulin resistance, which is an early indicator of diabetes.”

“After six years on the diet, the trans-fat-fed monkeys had gained 7.2% of their body weight, compared to just 1.8% in the unsaturated group. CT scans also revealed that the trans-fat monkeys carried 30% more abdominal fat, which is a risk factor for diabetes and heart disease.”

Fat has gotten a pretty negative wrap from nutritionists up until quite recently. However it is important to realise that fat is a very important nutrient in itself. It is used to make cell membranes and also plays an important role in the uptake of several vitamins. Fat also helps keep your hair and skin healthy.

However as emphasised before it is the quality of the fat we ingest which is of importance. As http://www.hsph.harvard.edu/nutritionsource/fats.html puts it:

“Detailed research -much of it done at Harvard - shows that the total amount of fat in the diet, whether high or low, isn't really linked with disease. What really matters is the type of fat in the diet.”

As common sense would dictate a diet of mostly fruit, vegetables, nuts and minimal grain products (which should when consumed be wholegrain) will provide us with a very healthy diet. In such a natural diet there are indeed sources of fat such as nuts, avocadoes and olives. The best meat source for these healthy fats is fish, and these provide the extra benefit of omega 3 fatty acids, which I have blogged about here:!!!

For those of you fortunate enough to live in Australia then I suggest you try Kangaroo, a rather healthy tasty meat. It is very lean and contains little fat, and of the fat it does contain the greater proportion is from the unsaturated categories rather than saturated fat! So if you can get it, and you don’t mind its gamey flavour, go for Kangaroo!

While the unsaturated fats lower our “bad” cholesterol and increase the “good” cholesterol, saturated fat simply increases the “bad” cholestrol. Of course limited amounts are unavoidable and they are chiefly present in meats (particularly less lean meats like lamb), dairy products, as well as cocoa and coconut. Saturated fats are somewhat worse for us, and have a tendency to increase our “bad” cholesterol. However Trans fats, a form of man made fats, created through a process known as hydrogenation and notably present only in man made foods are best completely avoided.

Again I quote from: http://www.hsph.harvard.edu/nutritionsource/fats.html:

“The Nurses' Health Study found that replacing only 30 calories (7 grams) of carbohydrates every day with 30 calories (4 grams) of trans fats nearly doubled the risk for heart disease. (9) Saturated fats increased risk as well, but not nearly as much.”

Let me just add that 30 calories is not much at all! Its only 4 grams of the stuff! Yet that amount daily can “nearly double the risk for heart disease”, I mean think about it for a minute… only 4 grams!

“For the good fats, there is consistent evidence that high intake of either monounsaturated or polyunsaturated fat lowers the risk for heart disease. In the Nurses' Health Study, replacing 80 calories of carbohydrates with 80 calories of either polyunsaturated or monounsaturated fats lowered the risk for heart disease by about 30 to 40 percent.(8)”

So the easiest way to implement a healthy diet is simply to avoid processed foods (easier to say than it sounds!) or at very least cut back on them drastically, and stick to what are commonly called “whole” foods. This is to say foods that are unprocessed, and are eaten in a very close manner to how they naturally develop. In the case of fats this means avoid using too much oil and eating too much in the way of dairy, as well as sticking to leaner meats. To be honest I believe that slowly implementing these changes in your life will work best. I advocate a slow approach to change, one that is manageable, instead of the traditional sudden leap which will normally always fail after the initial motivation has passed.

So there you have it. Fats in a nutshell! And remember nuts are a good source of the “good” fats, as well as having smaller amounts of saturated fats in them! J - How’s that for applied knowledge eh? Now when I say fats in a nutshell I lie, as to be honest I have not really touched on some areas, most importantly of which is Omega-3. But fear not, for here is a link which shall explain just that to you: "Omega-3: Something smells fishy, what’s all the hype about?”


 
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