So much has been said about the benefits of fish oil that it might be confusing to wade through the pile of information that it's out there. Well, I've done it for you. So sit back and enjoy reading all about it.
Modern society tends to regard fat as something to avoid. But that is the worst thing we could do. Our bodies absolutely need fat to live.
But the type of fat we eat is of enormous consequence to our health.
Dietary fats provide a concentrated energy source as well as the building blocks for cell membranes and a variety of hormones.
Quality unprocessed fats are also necessary in the diet because they carry the fat-soluble vitamins A, D, E, and K to the body's tissues.
Fats and oils, including fish oil, are all made from fatty acids. Our bodies are also very good at manufacturing fats (for example, cholesterol). But some fats, known as essential fatty acids (EFAs), cannot be made by the body, they have to be supplied by the diet and we cannot live without them.
The main two types of essential fatty acids are: omega-3 and omega-6.
Omega-3 fatty acids are particularly concentrated in fish and fish oils, as well as in some land plants - flaxseed, hempseed, and walnuts.
Omega-6 fatty acids are concentrated in land based vegetable oils such as corn, safflower and sunflower oil, as well on animal foods raised on land-based feeds.
By weight, more EFAs are required by the body than any other type of fat or other nutrient that is considered essential. Every single cell, organ and tissue requires a daily supply of EFAs.
We'll consider now how these fatty acids work either to keep us healthy or to cause disease.
It is now well known that numerous bodily processes, such as blood clotting and inflammation, are largely controlled by very potent hormone-like substances - prostaglandins, thromboxanes and leukotrienes- collectively called eicosanoids and the raw material from which these substances are made is the fatty acids from food.
Some of them encourage inflammation and others turn it down.
Not surprisingly, the type and quantities of specific fatty acids that go in determine the amount and type of eicosanoids that come out. They can be biologically friendly or dangerous.
So through the type of fats we eat, we can manipulate the levels and biological activity of eicosanoids circulating in our blood.
Very quickly after you eat fat, it shows up in the membranes of your cells where its metabolic fate is determined.
When you eat land-based omega-6 fatty acids from a piece of meat or corn oil, they tend to be changed into a substance called arachidonic acid, which encourages formation of eicosanoids that are highly inflammatory, stimulate immune responses, promote blood stickiness and blood vessel constriction, headaches and even growth of malignant tumors.
Fat from fish and fish oil, on the other hand, is radically different and more benign. Its omega-3 fatty acids tend to be converted into substances that break up undesirable blood clots, dilate blood vessels, fight off joint pain by reducing inflammation and cell damage. The benefits of fish oil are really many.
Since food is made of a mixture of omega-3's and omega-6's, obviously these two fatty acids are continually giving contradictory instructions to cells. Which prevails - those for health or those for disease - depends on the ratio of the two fatty acids in your diet and hence in your cells.
If your cells are flooded with omega-6 fatty acids, the resulting oversupply of overactive prostaglandins will run amok, generating disease. If you have sufficient omega-3 fatty acids, they can check or cool down the arachidonic engine that is spewing out disease-producing eicosanoids.
Our intake of fatty acids should look more like this diagram:
Your cells are a battleground where omega-3 and omega-6 fatty acids compete for supremacy. And which one wins day after day determines the state of your health.
The truth is that for most people living in Western countries, it's a constant defeat.
We get far too much omega-6 and far too little omega-3 fatty acids in our diet. Americans, for example, eat at least 10 to 15 times more omega-6's than omega-3's.
By contrast, Eskimos, who are known for their very low rates of chronic disease, eat three time more omega-3's than omega-6's, primarily due to their high fish consumption.
In recent studies researchers have found that omega-6's comprised 80% of the unsaturated fatty acids circulating in Americans' cell membranes.
In comparison, omega-6 levels were closer to 65% in the French, 50% in the Japanese and only 22% in Greenland Eskimos.
Today's fish-deficient diets leave our cells starved of marine oil and overburdened by modern processed oils and meat fats, that are causing a lot of damage to our cells.
This, according to many researchers, can throw cells into major malfunction, precipitating our current epidemic of chronic illnesses such as heart disease, cancer, diabetes and arthritis.
Obviously, human bodies require a minimum dose of omega-3 fatty acids and not getting them, can bring a lot of health problems.
If you typically eat 2,000 calories a day and you don't have any serious health condition, you need at least 650 milligrams daily of omega-3 fatty acids, say experts, to keep healthy.
You can get that much by eating one of the following each day:
If you have any health conditions, then you need to increase the amount of fish oil that you consume, even twice or three times that amount.
But some people might be put of enjoying the benefits of fish oil because they've heard about the presence of heavy metals in fish.
Mercury is a problem in many large predator fish, such as shark, swordfish, and some larger species of tuna.
There's no doubt that these fish accumulate mercury from their prey and the larger the fish the highest the concentration of mercury.
Mercury can accumulate in the human body, and too much can cause neurological problems, especially in fetuses and young children.
You can still enjoy the benefits of fish oil if you follow these few tips:
So the amount of omega-3 fatty acids you need depend very much on whether you want to keep good health or deal with an existing condition.
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A wonderful source of omega-3 fatty acids, which has been shown to reduce all the risk factors leading to heart disease
It's sourced from ecologically
clean seas and undergoes selective absorption of
pollutants like heavy metals, dioxides and
PCBs to ensure purity.