They have many powerful health benefits for your body and brain.
In fact, few nutrients have been studied as thoroughly as omega-3 fatty acids.
Here are 17 health benefits of omega-3 fatty acids that are supported by science.
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Omega-3s Can Fight Depression and Anxiety
Depression is one of the most common mental disorders in the world.
Symptoms include sadness, lethargy, and a general loss of interest in life.
Anxiety, also a common disorder, is characterized by constant worry and nervousness.
Interestingly, studies indicate that people who consume omega-3s regularly are less likely to be depressed.
What’s more, when people with depression or anxiety start taking omega-3 supplements, their symptoms improve.
There are fatty acids: ALA, EPA, and DHA. Of the three, EPA appears to be the best at fighting depression.
One study even found EPA as effective against depression as a common antidepressant drug.
Summary Omega-3 supplements may help prevent and
treat depression and anxiety. EPA seems to be the most effective at fighting
Omega-3s Can Improve Eye Health
DHA, a type of omega-3, is a major structural component of the retina.
When you don’t get enough DHA, vision problems may arise.
Interestingly, getting enough omega-3 is linked to a reduced risk of macular degeneration, one of the world’s leading causes of permanent eye damage and blindness.
Summary An omega-3 fatty acid called DHA is a major
structural component of your eye’s retinas. It may help prevent macular
degeneration, which can cause vision impairment and blindness.
Omega-3s Can Promote Brain Health During Pregnancy and Early Life
Omega-3s are crucial for brain growth and development in infants.
DHA accounts for 40% of the polyunsaturated fatty acids in your brain and 60% in the retina of your eye.
Therefore, it’s no surprise that infants fed a DHA-fortified formula have better eyesight than infants fed a formula without it
Getting enough omega-3s during pregnancy is associated with numerous benefits for your child.
Better communication and social skills
Fewer behavioral problems
Decreased risk of developmental delay
Decreased risk of ADHD, autism, and cerebral palsy
Summary Getting enough omega-3s during pregnancy and
early life is crucial for your child’s development. Supplementing is linked to
higher intelligence and a lower risk of several diseases.
Omega-3s Can Improve Risk Factors for Heart Disease
Heart attacks and strokes are the world’s leading causes of death.
Decades ago, researchers observed that fish-eating communities had very low rates of these diseases. This was later linked to omega-3 consumption.
Since then, omega-3 fatty acids have been tied to numerous benefits for heart health.
Omega-3s can cause a major reduction in triglycerides usually in the range of 15–30%.
Omega-3s can reduce blood pressure levels in people with high blood pressure.
“Good” HDL cholesterol:
Omega-3s can raise “good” HDL cholesterol levels.
Blood clots: Omega-3s can keep blood
platelets from clumping together. This helps prevent the formation of harmful blood clots.
Plaque: By keeping your arteries
smooth and free from damage, omega-3s help prevent the plaque that can restrict
and harden your arteries.
Omega-3s reduce the production of some substances released during your body’s
For some people, omega-3s can also lower “bad” LDL cholesterol. However, evidence is mixed — some studies find increases in LDL.
Despite these beneficial effects on heart disease risk factors, there is no convincing evidence that omega-3 supplements can prevent heart attacks or strokes. Many studies find no benefit.
Summary Omega-3s improve numerous heart disease risk
factors. However, omega-3 supplements do not seem to reduce your risk of heart
attacks or strokes.
Omega-3s Can Reduce Symptoms of ADHD in Children
Attention deficit hyperactivity disorder (ADHD) is a behavioral disorder characterized by inattention, hyperactivity and impulsivity.
Several studies note that children with ADHD have lower blood levels of omega-3 fatty acids than their healthy peers.
What’s more, numerous studies observe that omega-3 supplements can reduce the symptoms of ADHD.
Omega-3s help improves inattention and task completion. They also decrease hyperactivity, impulsiveness, restlessness and aggression.
Recently, researchers observed that fish oil supplements were one of the most promising treatments for ADHD.
Summary Omega-3 supplements can reduce the symptoms
of ADHD in children. They improve attention and reduce hyperactivity,
impulsiveness, and aggression.
Omega-3s Can Reduce Symptoms of Metabolic Syndrome
Metabolic syndrome is a collection of conditions.
It includes central obesity — also known as belly fat — as well as high blood pressure, insulin resistance, high triglycerides and low “good” HDL cholesterol levels.
It is a major public health concern because it increases your risk of many other illnesses, including heart disease and diabetes.
Omega-3 fatty acids can improve insulin resistance, inflammation and heart disease risk factors in people with metabolic syndrome.
Summary Omega-3s can have numerous benefits for people
with metabolic syndrome. They can reduce insulin resistance, fight inflammation
and improve several heart disease risk factors.
Omega-3s Can Fight Inflammation
Inflammation is a natural response to infections and damage in your body. Therefore, it is vital for your health.
However, inflammation sometimes persists for a long time, even without an infection or injury. This is called chronic — or long-term — inflammation.
Long-term inflammation can contribute to almost every chronic Western illness, including heart disease and cancer.
Notably, omega-3 fatty acids can reduce the production of molecules and substances linked to inflammation, such as inflammatory eicosanoids and cytokines.
Studies have consistently observed a connection between higher omega-3 intake and reduces inflammation.
can reduce chronic inflammation, which can contribute to heart disease, cancer
, and various other diseases.
Omega-3s Can Fight Autoimmune Diseases
In autoimmune diseases, your immune system mistakes healthy cells for foreign cells and starts attacking them.
Type 1 diabetes is one prime example, in which your immune system attacks the insulin-producing cells in your pancreas.
Omega-3s can combat some of these diseases and may be especially important during early life.
Studies show that getting enough omega-3s during your first year of life is linked to a reduced risk of many autoimmune diseases, including type 1 diabetes, autoimmune diabetes, and multiple sclerosis.
Omega-3s also help treat lupus, rheumatoid arthritis, ulcerative colitis, Crohn’s disease and psoriasis.
Summary Omega-3 fatty acids can help fight several
autoimmune diseases, including type 1 diabetes, rheumatoid arthritis,
ulcerative colitis, Crohn’s disease, and psoriasis.
Omega-3s Can Improve Mental Disorders
Low omega-3 levels have been reported in people with psychiatric disorders.
Studies suggest that omega-3 supplements can reduce the frequency of mood swings and relapses in people with both schizophrenia and bipolar disorder.
Supplementing with omega-3 fatty acids may also decrease violent behavior.
Summary People with mental disorders often have low
blood levels of omega-3 fats. Improving omega-3 status seems to improve
Omega-3s Can Fight Age-Related Mental Decline and Alzheimer’s Disease
A decline in brain function is one of the unavoidable consequences of aging.
Several studies link higher omega-3 intake to decreased age-related mental decline and a reduced risk of Alzheimer’s disease.
One review of controlled studies suggests that omega-3 supplements may be beneficial at disease onset, when the symptoms of AD are very mild.
Keep in mind that more research is needed on omega-3s and.
Omega-3 fats may help prevent age-related mental decline and Alzheimer’s disease, but more research is needed.
Omega-3s May Help Prevent Cancer
is one of the leading causes of death in the Western world, and omega-3 fatty acids have long been claimed to reduce the risk of certain cancers.
Interestingly, studies show that people who consume the most omega-3s have up to a 55% lower risk of colon cancer.
Additionally, omega-3 consumption is linked to a reduced risk of prostate cancer in men and breast cancer in women. However, not all studies give the same results.
Summary Omega-3 intake may decrease the risk of some
types of cancer, including colon, prostate, and breast cancer.
Omega-3s Can Reduce Asthma in Children
Asthma is a chronic lung disease with symptoms like coughing, shortness of breath and wheezing.
Severe asthma attacks can be very dangerous. They are caused by inflammation and swelling in the airways of your lungs.
What’s more, asthma rates in the US have been rising over the past few decades.
Several studies associate omega-3 consumption with a lower risk of asthma in children and young adults.
Summary Omega-3 intake has been associated with a lower
risk of asthma in both children and young adults.
Omega-3s Can Reduce Fat in Your Liver
Non-alcoholic fatty liver disease (NAFLD) is more common than you think.
It has increased with the obesity epidemic to become the most common cause of chronic liver disease in the Western world.
However, supplementing with omega-3 fatty acids effectively reduces liver fat and inflammation in people with NAFLD.
Summary Omega-3 fatty acids reduce liver fat in people
with non-alcoholic fatty liver disease.
Omega-3s May Improve Bone and Joint Health
Osteoporosis and arteries are two common disorders that affect your skeletal system.
Studies indicate that omega-3s can improve bone strength by boosting the amount of calcium in your bones, which should lead to a reduced risk of osteoporosis.
Omega-3s may also treat arthritis. Patients taking omega-3 supplements have reported reduced joint pain and increased grip strength.
may improve bone strength and joint health, potentially reducing your risk of
osteoporosis and arthritis.
Omega-3s Can Alleviate Menstrual Pain
Menstrual pain occurs in your lower abdomen and pelvis and often radiates to your lower back and thighs.
It can significantly affect your quality of life.
However, studies repeatedly prove that women who consume the most omega-3s have milder menstrual pain.
One study even determined that an omega-3 supplement was more effective than ibuprofen in treating severe pain during menstruation.
Summary Omega-3 fatty acids can reduce menstrual pain
and may even be more effective than ibuprofen, an anti-inflammatory drug.
Omega-3 Fatty Acids May Improve Sleep
Good sleep is one of the foundations of optimal health.
Studies tie sleep deprivation to many diseases, including obesity, diabetes, and depression.
Low levels of omega-3 fatty acids are associated with sleep problems in children and obstructive sleep apnoea in adults.
Low levels of DHA are also linked to lower levels of the hormone melatonin, which helps you fall asleep.
Studies in both children and adults reveal that supplementing with omega-3 increases the length and quality of sleep.
fatty acids — especially DHA — may improve the length and quality of your
Omega-3 Fats Are Good For Your Skin
DHA is a structural component of your skin. It is responsible for the health of cell membranes, which make up a large part of your skin.
A healthy cell membrane results in soft, moist, supple, and wrinkle-free skin.
EPA also in several ways, including:
Managing oil production
and hydration of your skin.
hyperkeratinization of hair follicles, which appears as the little red bumps
often seen on upper arms.
Reducing premature aging
of your skin.
Reducing the risk of
Omega-3s can also protect your skin from sun damage. EPA helps block the release of substances that eat away at the collagen in your skin after sun exposure.
Summary Omega-3s can help keep your skin healthy,
preventing premature aging and safeguarding against sun damage.
The Bottom Line
Omega-3 fatty acids are vital for optimal health.
Getting them from whole foods — such as fatty fish two times per week — is the best way to ensure robust omega-3 intake.
However, if you don’t eat a lot of fatty fish, then you may want to consider taking an omega-3 supplement. For people deficient in omega-3, this is a cheap and highly effective way to improve health.