Saturday, February 23, 2013

OMEGA-3 FATTY ACIDS IN FISH OIL BENEFIT HEALTH




As we all know, fish oil brings a lot of health benefits to us.



Most of the health benefits of fish oil can be attributed to the presence of Omega-3 essential fatty acids like Docosahexaenoic acid (DHA) and Eicosapentaenoic acid (EPA).

                                                                                             


What is omega-3 fatty acid?

Omega-3 fatty acids  are organic compunds commonly found in marine and plant oils. They are polyunsaturated fatty acids with a double bond (C=C) starting after the third carbon atom from the end of the carbon chain. The fatty acids have two ends—the acid (COOH) end and the methyl (CH3) end. The location of the first double bond is counted from the methyl end, which is also known as the omega (ω) end or the n end.
Some of the potential health benefits of omega-3 fatty acids supplementation are controversial. They are considered essential fatty acids, meaning that they cannot be synthesized by the human body but are vital for normal metabolism.

Eicosapentaenoic Acid (EPA)
It also called timnodonic acid. In chemical structure, EPA is a carboxylic acid with a 20-carbon chain and five cis double bonds.
EPA is a polyunsaturated fatty acid that acts as a precursor for prostaglandin-3, thromboxane-3, and leukotriene-5 groups.

File:EPAnumbering.png

Docosahexaenoic acid (DHA)
It is a primary structural component of the human brain, cerebral cortex, skin, sperm, testicles and retina. It can be synthesized from alpha-lilolenic acid or obtained directly from maternal milk or fish oil. DHA is a carboxylic acid with a 22-carbon chain and six cis double bonds. Its trivial name is cervonic acid.

File:DHA numbers.svg


HEALTH BENEFITS OF FISH OIL
                                        

HEALTHY HEART

Omega-3 fatty acid is effective in reducing the incidence of cardiovascular diseases. Fish oil is a good source of omega-3 and therefore, reduces the risk of heart diseases and heart arrhythmias. It also lowers the level of bad cholesterol (LDL), and increases the level of good cholesterol (HDL). Omega-3 fatty acids found in fish oil help lower triglycerides, lower blood pressure, reduce the risk of blood clots, improve the health of arteries and reduce the amount of arterial plaque, which narrows arteries and causes heart diseases. Preliminary research has also shown that fish oil can be used for preventing atherosclerosis in coronary patients. Thus fish oil is effective in treating heart strokes and regular usage of fish oil can help avoid numerous sudden cardiac deaths. EPA and DHA are converted into hormone like substances called prostaglandins, and they regulate cell activity and healthy cardiovascular function.

          


IMPROVED IMMUNITY

It is believed that regular consumption of fish oil aids in increasing your immunity thereby enabling you to resist incidence of common diseases such as cold, cough and flu. Omega three fatty acids present in fish oil benefit the immune system by effecting cytokines and eicosanoids present in our body. Thus fish oil has the potential to enhance the immune system of humans. Fish oil is also beneficial to patients suffering from lupus, which is a disease characterized by the attacks of immune system of the body on various organs and tissues. It also helps in reducing associated fever, skin rashes and fatigue.

               

ULCERS

The presence of EPA and DHA in fish oil makes it helpful in case of ulcers caused by Nonsteroidal anti-inflammatory drugs (NSAIDs)


HUMAN GROW AND INTELLECTUAL DEVELOPMENT

DHA plays a very important role during fetal development, early infancy, and old age. DHA is a building block of tissue in the brain. It helps with forming neurotransmitters, which is important for brain function. 50% of the weight of a neuron's plasma membrane is composed of DHA. Elderly people should also take EPA and DHA, because as we get older, our bodies form less DHA and EPA, which may cause less mental focus and cognitive function. Taking EPA and DHA may also help with mental abnormalities, such as Alzheimer's Disease and Dementia.

                  
      
             

Fish oil has the ability to treat Attention Deficit Hyperactivity Disorder (ADHD) due to the high concentration of fatty acids. If your child suffers from hyperactivity, dyslexia, dyspraxia, inability to complete tasks, emotional instability, wavering attitude, poor coordination, short attention span, short term memory, low concentration, tendency to interrupt others, recklessness, hastiness, impetuosity, impulsiveness, low IQ, or learning disorders, fish oil is a proven remedy. Since brain consists of about 60% of fats, especially essential fatty acids such as omega 3 and omega 6, fish oil helps in improving the functioning of the brain. Further, it is believed that fish oil is useful in the normal development of the brain. It helps your kid concentrate on the studies better. It has been further found that when pregnant women are given regular doses of fish oil, the born toddlers show enhanced hand eye coordination. 

             


SKIN CARE

Fish oil helps in improving the condition of poor and dry skin by making it shinny and glowing. It is useful in treating various skin problems such as eczema, psoriasis, itching, redness of skin, skin lesions, and rashes. In case of psoriasis, the EPA present in fish oil restricts the growth of pro-inflammatory agents by producing arachidonic acid. Fish oil can also be applied topically to get relief from psoriasis. Regular intake of fish oil capsule helps in reducing loss of moisture from the skin. It is also claimed by some people that fish oil helps in preventing sunburns. 


Fish oil is effective for acne as well. EPA is known to inhibit androgen formation. Androgen can affect the formation of sebum in hair follicle.


PREGNANCY

Fish oil is very useful for pregnant women as DHA present in it helps in the development of the eyes and brain of the baby. It helps in avoiding premature births, low weight at birth, and miscarriage.  It is also believed that women who do not have a sufficient intake of EPA and DHA in their diet suffer from depression after birth as there is transfer of some amount of brain mass from the mother to the child in the last stages of pregnancy. Moreover, as mentioned above, when pregnant women are given fish oil supplements, the born kids show enhanced coordination between eye and hand. Thus it is very beneficial to consume fish oil either by eating fish or taking fish oil supplements, tablets, capsules, or pills during pregnancy for the overall development of the child and well being of the mother.

                   


HAIR CARE

Fish oil helps maintain a good luster of the hair. Omega-3 fatty acid has hair growing properties as it provides nourishment to the follicles. It aids in faster development of hair and preventing hair loss. A good supply of proteins is also necessary for hair growth. Since most fish varieties are rich in protein, eating fish helps in keeping healthy hair.

                 


DEPRESSION AND ANXIETY

Due to the presence of Omega 3 fatty acids, fish oil is good for relieving depression, sadness, anxiety, restlessness, mental fatigue, stress, decreased sexual desire, suicidal tendencies and other nervous disorders.


 Fish oil can be useful in mood stabilizing and treating bipolar disorders. No wonder, it has been found that countries where fish is eaten often have low incidence of depression. Similarly research conducted on prisoners has shown that when prisoners were fed with sea food containing higher amount of omega-3 fatty acids there was a significant drop in the homicide rate.
                                                             


WEIGHT LOSS

Fish oil also aids in losing weight. It can improve the efficiency of exercise in reducing weight. Volunteers who were given fish oil diet showed greater weight loss as compared to those who did not consume fish oil diet. Exercise combined with fish oil had a positive effect on the body shape and body composition of the patients.

                                              

Besides that, omega-3 fatty acids in fish oil may also have positive effects on lung and kidney diseases, diabetes, Crohn's disease, anorexia nervosa, osteoporosis, inflammation and early stages of colorectal cancer.
                                                                    


There are other benefits to taking EPA and DHA because it also plays as a source of energy, it insulates the body against heat loss, prevents skin from drying and flaking, and cushions tissues and organs.