Good fats vs bad fats
Good fats vs bad fats
One of the first things people cut out why trying to lose weight is fats, but there are so many fats and oils out there and some are essential to our diet and are actually good for us. Here is some information to help you pick and avoid the fats that are good and bad for you.
There are 4 main groups of fats:
· Saturated Fats
· Monounsaturated Fats
· Polyunsaturated Fats
· Trans Fats
Saturated fats
Sources of Saturated fats
Animal |
Non Animal |
Meat- Beef, Pork, Lamb |
Palm Oil |
Poultry- Chicken, Duck |
Coconut Oil |
Dairy- Milk, Cheese, Yoghurt, Cream, Butter |
|
Eggs |
|
Saturated fats have had a pretty hard time in the press over the years as they have been blamed as a cause of coronary heart disease. Recent research has shown that the original studies may have been misinterpreted and misrepresented. Studies have now stated that fat found in the artery walls of coronary heart disease patients are made up of 26% saturated fat and the rest is unsaturated or predominantly plant based.
Benefits of saturated fats are:
· Enhancement of the immune system
· Enhancement of liver function as it helps protect against the effects of alcohol
· Great source of energy
Unsaturated Fats are split into two groups, Monounsaturated and Polyunsaturated fats.
Monounsaturated Fats
|
Sources of Monounsaturated Fats |
Avocado oil |
Olive Oil |
Hazel nuts |
Lard |
Almonds |
Peanut Oil |
Rapeseed oil |
Canola Oil |
Monounsaturated fats are thought to lower the risk of coronary heart disease, which is the reason the adverts at the moment are trying to get us to represent a Mediterranean diet. Even though these fats are good for us be careful how much of these you eat as they make up the largest part of our body fat, comprising 52%.
Polyunsaturated Fats
These are split into two groups.
Omega 3 fatty acids |
Omega 6 fatty acids |
Oily fish and cod liver oil |
Sunflower oil and seeds |
Falxseeds and Oil |
Corn and soybean oil |
Walnuts |
Safflower oil |
Pasture reared eggs |
Pumpkin seeds |
|
Sesame oil and seeds |
These are also known as essential fatty acids as they are essential to our diet, as our body cannot synthesise them itself. These fatty acids are needed for the functioning of our cells and must be eaten in the required amounts to promote good health. A ratio of 1:2 or 2:1 of omega 6 to omega 3 fatty acids should be consumed. Over eating of omega 6 in the modern diet has been shown to increase cardiovascular diseases and cancer. Omega 3 fatty acids are very beneficial to us as they reduce the tendency of blood to clot lower total cholesterol and raise levels of HDL cholesterol. HDL cholesterol is good cholesterol and can lower the risk of coronary heart disease.
Trans Fats
These are the bad ones and are not good for you on any level. They are 100% man made unsaturated fats. Our bodies do not recognise the structure of these fatty acids and therefore cannot utilise them. These are responsible for coronary heart disease and some experts believe that trans fats are closer in structure to plastic than fat! Common foods that contain trans fats are:
Many Margarine’s |
Pies |
Biscuits |
Pastries |
Cakes |
Pre-prepared foods |
Crackers |
Many “low fat” processed foods. (Low in saturated fat but high in trans fat |
Take away foods |
|
Many food manufactures make out their products are healthy and good for us are they are low in saturated fat, as we have been made to think these are bad for us through the media. These “healthier options” are actually full of trans fats, which can be labelled unsaturated. If you are looking to lose weight steer clear of these as our bodies cannot utilise them and they become stored as body fat. It is much better to go for the full fat option as it contains natural nutrients that our body needs and they taste better, so it’s a win win situation.
Margarines
This is something to think about when reaching for the margarine instead of the butter next time in the supermarket. This is how margarine is produced.
1. They start are natural vegetable oils, Soy beans, corn sunflower or rapeseeds
2. Oils are extracted by high temperature and pressure
3. Remaining fraction of oils removed with hexane and other solvents
4. Oils are now rancid, they are steam cleaned to remove all vitamins and anti-oxidants, but the pesticides and solvents remain
5. Oils are mixed with a nickel catalyst
6. Oils with the catalyst are subjected to hydrodegn gas in a high-pressure, high temperature reactor
7. Soap like emulsifiers are mixed in
8. Oils steam cleansed to remove the horrible odour
9. They are now grey in colour, so are bleached
10. Artificial colours, synthetic vitamins and natural colour are added
11. Mixture is packaged in tubs and advertised as a health food
I never go near margarine, full butter all the way for me.
So in summary, stay clear of anything that contains trans fats and eat a good balance of saturated, mono and polyunsaturated fats.