Dopamine is a neurotransmitter that helps control the brain's reward and pleasure centers. A neurotransmitter is a chemical found in the brain, which is used for transmitting nerves impulses or messages. Dopamine also helps regulate movement and emotional responses, and it enables us not only to see rewards, but to take action to move toward them. Dopamine deficiency results in Parkinson's Disease, and people with low dopamine activity may be more prone to addiction. The presence of a certain kind of dopamine receptor is also associated with sensation-seeking.
The dopamine neurotransmitter is found in a variety of animals (vertebrates and invertebrates) as also in human beings. George Barger and James Ewens at Wellcome Laboratories in London, are credited with the synthesis of dopamine in 1910. Whereas, Arvid Carlsson and Nils-Åke Hillarp first recognized the function of dopamine as a neurotransmitter in the year 1958. D1, D2, D3, D4, and D5 are the different types of dopamine receptors which function together for transmitting nerve impulses. Dopamine is believed to be instrumental in controlling several movements of the human body and also human emotions. The following are some quick facts about dopamine:
Chemical formula ~ C6H3(OH)2-CH2-CH2-NH2
Chemical name ~ 4-(2-aminoethyl)benzene-1,2-diol
Abbreviation ~ DA
Other names ~ 2-(3,4-dihydroxyphenyl)ethylamine; 3,4-dihydroxyphenethylamine; 3-hydroxytyramine; Revivan; Intropin; Oxytyramine
Molecular formula ~ C8H11NO2
Melting point ~ 262 °F
Molar mass ~ 153.18 g/mol
Dopamine has many functions in the brain, including important roles in behavior and cognition, voluntary movement, motivation and reward, inhibition of prolactin production (involved in lactation), sleep, mood, attention, and learning. Dopaminergic neurons (i.e., neurons whose primary neurotransmitter is dopamine) are present chiefly in the ventral tegmental area (VTA) of the midbrain, the substantia nigra pars compacta, and the arcuate nucleus of the hypothalamus.
One of the most important functions of dopamine is that it helps in controlling body movements. Therefore, we find that people suffering from dopamine deficiency experience uncontrolled movements like tremors or involuntary shaking of hands and legs. Secondly, dopamine controls the motor abilities and also the thinking abilities of a person. One can suffer from disturbances in maintaining attention in case of reduced levels of dopamine. Thirdly, this chemical also controls the brain's reward system. The brain's pleasure system is also based on the activity of dopamine. This chemical is released when one experiences pleasure of any kind. Dopamine is also a neurohormone (hormone released by neurons) which helps in the release of prolactin. Therefore, we can sum up by saying that dopamine plays a major role in cognition, voluntary movements, motivation, concentration, attention, punishment and reward, sleep, mood, memory, and also learning. Dopamine deficiency can lead to serious health conditions like Attention Deficit Hyperactivity Disorder (ADHD) and schizophrenia.
It has been hypothesized that dopamine transmits reward prediction error, although this has been questioned. According to this hypothesis, the phasic responses of dopamine neurons are observed when an unexpected reward is presented. These responses transfer to the onset of a conditioned stimulus after repeated pairings with the reward. Further, dopamine neurons are depressed when the expected reward is omitted. Thus, dopamine neurons seem to encode the prediction error of rewarding outcomes. In nature, we learn to repeat behaviors that lead to maximize rewards. Dopamine is therefore believed to provide a teaching signal to parts of the brain responsible for acquiring new behavior. Temporal difference learning provides a computational model describing how the prediction error of dopamine neurons is used as a teaching signal.
The reward system in insects uses octopamine, which is the presumed arthropod homolog of norepinephrine, rather than dopamine. In insects, dopamine acts instead as a punishment signal and is necessary to form aversive memories.
The following are the general uses of dopamine and also the therapeutic uses of the drug dopamine:
Dopamine is used for the treatment of Parkinson's disease. Therefore, methods on increasing dopamine naturally are advised to those suffering from this disorder.
Dopamine is used to treat shock caused due to trauma or injury.
Dopamine can improve functioning of the heart, in case blood supply is obstructed.
Intravenous dopamine acts on the sympathetic nervous system, resulting in increased blood pressure and heart rate, bringing them to normal.
If you are wondering how is dopamine used during surgeries, then note that the neurotransmitter is not injected directly; but its precursors are administered which stimulate the brain for the production of dopamine. Dopamine is available in the form of an injectable which is used only for medical or therapeutic purposes. There are also methods to increase dopamine naturally.
To understand the effects of dopamine deficiency, let us first take a look at the functions of dopamine in the brain.
Dopamine is absolutely critical to the way our brain controls our movements.
Dopamine plays an important role in the addictive behavior of an individual.
Dopamine neurotransmitter is believed to give a signal to those parts of the brain, which are responsible for learning new ideas.
Dopamine is required for healthy sleeping habits, maintaining mood (feeling of pleasure), good concentration skills, sharp memory and better learning skills.
Dopamine acts as a neurotransmitter and activates the five types of dopamine receptors - D1, D2, D3, D4, and D5, along with their variants.
As a hormone, dopamine suppresses the release of prolactin (involved in lactation and feelings of gratification) from the anterior lobe of the pituitary gland. Dopamine producing medications are prescribed to control elevated prolactin levels and to control the growth of prolactinomas (benign pituitary tumors).
Dopamine plays an important role in behavior and cognition (thinking process), voluntary movement, motivation, punishment (practice of imposing something negative or unpleasant on a person or disobedience, defiance) and reward (behavior known for pleasurable effects) of an individual.
Deficiency of dopamine causes Parkinson's disease, in which a person cannot execute smooth, controlled movements.
A person with deficiency of dopamine might sleep a lot and might have difficulty getting up.
A dopamine deficient person is more likely to form addictions, a need for caffeine or other stimulants.
Deficiency of dopamine might lead to weight gain.
Low blood pressure, low blood sugar and frequent dehydration can be observed if the body is not able to produce sufficient amounts of dopamine.
A person diagnosed with such kind of deficiency might experience quick drop in blood pressure level while getting out of bed in the morning, which might result in sudden dizziness.
The deficiency can be held responsible for depression, lack of motivation, mental and physical fatigue, impotence, suicidal thoughts, procrastination and the inability to feel pleasure.
Dopamine levels can be affected by stress, certain antidepressants, drug abuse, poor nutrition, poor sleep, alcohol abuse, excessive caffeine and sugar, electrolyte imbalance, exposure to toxic substances like lead, arsenic and cadmium, hypothyroidism, hormone imbalance (deficiency of other important hormones like thyroid hormones, estrogen and hormones secreted by adrenal glands), etc.
It is easy to check dopamine levels with the help of a dopamine deficiency test or a basic urine test. Balanced and healthy diet and prompt medication help raise dopamine levels. 100 to 500 milligrams of dihydroxyphenylserine (DOPS) is recommended to severe cases of dopamine deficiency. This medication, which increases blood pressure levels and helps reduce dizziness, can be taken two to three times each day. If DOPS medication does not work, then fludrocortisone or indomethacin (medications that are taken orally each day) can be administered. These medications also help raise blood pressure levels and they help in restoring balance in the frequency of urination. Severe deficiencies are treated with hormones and other medications. Remember, this information is just to provide guidelines, you should consult a doctor for proper medication. People on medication for insufficient production of dopamine need to be evaluated at least once every five years for renal function.
To improve dopamine levels, intake of alcohol, caffeine and excessive sugar should be stopped. Sugar, saturated fats, cholesterol, and refined foods affect brain power and can cause low dopamine levels. Saturated fats and cholesterol should be avoided as they can clog the arteries going to the brain, heart, and other organs. Foods that are rich in antioxidants, such as fruits and vegetables should be consumed in large quantities. Antioxidant rich foods can help protect dopamine-using neurons from free radical damage. Doctors or dietitians usually recommend supplements containing vitamins C, vitamin E, and other antioxidants, to those who are suffering from low dopamine levels. Foods which are high in dopamine-increasing tyrosine (an amino acid) include almonds, avocados, bananas, dairy products, lima beans, pumpkin seeds, and sesame seeds. Dopamine supplements can be taken under the guidance of your physician.
We have already given you
a fair idea of why dopamine is important. Add to that the fact that
dopamine deficiency can lead to an increase in the feelings of
depression, addictions and food cravings, loss of motor control,
increase in compulsions and obsessions as well lowered attention,
concentration and focus. Therefore it becomes important to learn how
to increase dopamine levels. Here are some ways in which this can be
made possible.
It has been seen that
there is a direct connection between exercising and an increase of
dopamine levels. Studies have shown that even simple and mild
exercising for 30 minutes triggers the body into producing more
dopamine. These lead to a great high and to feelings of happiness and
satisfaction. Thus the body gets a signal that exercising is
responsible for producing those feelings of satisfaction. When this
response gets conditioned into the brain, the body immediately begins
producing the dopamine chemicals and keeps the levels high.
Sleep has been seen to be
one of the most basic aids in keeping the body fit and healthy. The
basic function of sleep is that it allows for the repair of the wear
and tear that the body and mind goes through throughout the day in
doing all the activities. Similarly, sleep is also responsible for
relaxing the mind and thereby helping in increasing the dopamine
levels naturally. All that needs to be looked into is that one gets a
minimum of 8 hours of deep, undisturbed sleep so that it allows for
the body and brain to recuperate.
There are certain foods
that increase dopamine levels naturally and therefore including these
choices in your diet helps tremendously in how to increase dopamine
in the brain. What are some of the foods that need to be included?
Apples, chicken, banana, cheeses, beet roots, eggs, fish, beans,
legumes, protein, milk, seafood, blueberries, cranberries, prunes,
strawberries, red beans, almonds, avocados, pumpkin seeds, sesame
seeds, duck, walnut, wheat germ, turkey, soybeans and cucumbers.
Including all these foods as a part of your daily diet helps to
increase dopamine naturally.
Along with consuming
certain types of food, it is important to know the kind of foods that
need to be avoided as well. These include staying away from saturated
fats, high sugar foods, coffee, refined foods, alcohol and heavy
oils. All these work at different levels in lowering the levels of
dopamine in the body and negate the purpose of how to increase
dopamine in the body.
These were some of the ways of how to increase dopamine levels in the body and prevent the onset of several health risks that could develop without a proper supplement of dopamine. Maintaining a healthy diet and lifestyle is one of the keys to keeping the dopamine at normal levels. And now that you know that, you can work towards making it happen.
All medicines or supplements may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Dopamine:
Fast heartbeat; headache; nausea; vomiting.
Seek medical attention right away if any of these SEVERE side effects occur when using Dopamine:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dizziness; irregular heartbeat; pain, redness, or swelling at the injection site; severe headache.
Some common side effects of dopamine are usually not considered very serious. One of these is increased heart rate. According to medicinenet, dopamine is used as a treatment for heart conditions, so cardiac effects are not atypical. Specifically, dopamine is a vasopressor and inotropic substance; that is, it has a vasoconstricting (narrowing) effect on the vessels of the circulatory system and also intensifies the pumping force of the heart muscle. In addition to increased heart rate, headaches are commonly reported. While the effects are usually mild, patients should contact their physician if these symptoms intensify or persist.
Another frequently reported side effect of dopamine is a queasy or upset stomach, which may or may not be accompanied by vomiting. This effect is typically temporary and not considered serious; however, if it persists or becomes disturbing, patients should promptly notify their physician.
There are several cross-system side effects that require immediate medical attention. One is a fast or rapid heartbeat, known as tachycardia. Another distressing cardiac symptom is angina or cardiac-related chest pain, which is generally associated with a myocardial infarction. These effects warrant immediate medical attention. Another concern relates to kidney function. A marked change in the amount or color of urine should be reported to a physician. Other potentially serious symptoms that require medical attention are breathing difficulty, changes in the skin to the point that it is cool to touch and sensation changes in the extremities.
Dopamine, a chemical derived from the amino acid tyrosine, is an important neurotransmitter which plays a role in a wide range of brain functions. Dopamine affects movement, emotions, the experience of pleasure, and memory.
A deficiency of a type of dopamine is likely responsible for the loss of pleasure and motivation found in major depression, according to a study conducted at the University of Mississippi Medical Center. Dopamine has been theorized to be a factor in depression and drugs that increase its level in the blood are sometimes added to traditional therapies. Dopamine can be beneficial by alleviating major depression and the depressed phase of bipolar disorder.
Patients with Parkinson's disease lose the majority of their dopamine-producing nerve cells. This causes the motor neurons to be unable to properly control bodily movements and overall coordination. One of the mainstay treatments for Parkinson's causes the level of dopamine in the blood to increase, thereby relieving the symptoms.
According to the University of Washington, a low level of dopamine is suggested to play a factor in attention deficit hyperactivity disorder. An area of the brain responsible for dopamine production is also responsible for cognitive tasks such as attention and focus. Dopamine may be beneficial in the treatment of attention deficit hyperactivity disorder.
Dopamine is known to play a substantial role in addiction. Many drugs, such as cocaine and amphetamine, cause blood dopamine levels to rise, leading to a sense of euphoria. Sweet foods can also cause an increase in dopamine, which can lead to addiction to the foods.
It is hypothesized that low levels of dopamine contribute to the susceptibility of some people to addiction and that finding healthy ways to increase their dopamine level may ease their substance abuse and addiction.
Intravenous dopamine is given for the treatment of serious heart failure. It may also be given after a heart attack, open heart surgery or trauma. Intravenous dopamine is sometimes prescribed to treat life-threatening septicemia (an infection of the blood) or kidney failure. It increases blood pressure which helps to stabilize the body. The patient receiving dopamine must be closely monitored and is usually placed in an Intensive Care Unit so that the dose can be properly titrated.
The benefit of dopamine in the correction of hemodynamic imbalance as well understood. It has a rapid onset of action and a reliable end result.
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11 of 12 people found the following review helpful:
5.0 out of 5 stars Straight forward..., November 23, 2011
By
Anoni (Longview, Texas)
If you aren't familiar with dopamine, it's a key neurotransmitter that do a lot of things, but most importantly, it's the transmitter that lets you know that you did a good thing by giving you a rewarded feeling of goodness. So you saved a kitten from a tree, or you helped someone fix a flat tire.... this is what you'll want to make those feelings better. This is a vital concept when it comes to living everyday life; you'll WANT to help people, you'll want to experience something new because it feels great... which will, in turn, make you actively seek out those opportunities. It will also give you an energetic feeling (not energy... just a gung-ho attitude).... but not just after you take the pill, you'll be "ready" at any given point that you want to be....
Who should take it? Depressed people, people with no motivation/energy, people with a low self-esteem, and pretty much anyone that doesn't feel great to be alive.
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