Some areas of the brain regulate mood. Researchers believe that - more important than levels of certain chemicals in the brain - the nerve cell connections, the growth of nerve cells, and the function of neural circuits have great effect on depression.

However, the understanding of the neurological underpinnings of mood is still incomplete.1

The use of this technology has led to a better understanding of which brain regions regulate mood and how other functions, such as memory, can be affected by depression. Regions play an important role in depression are the amygdala, the chamber, and the hippocampus.

Brain cells usually produce levels of neurotransmitters that keep senses, learning, movements and disposal, some people who have severe depression or manic complex systems they err. For example, the receptors may be hypersensitive or not to a specific neurotransmitter, causing their response to the release of excessive or inadequate. Or a message might be weakened if the cell in which you push a small amount of a neurotransmitter or if an overly efficient reuptake receptor draw too much before the cells have the opportunity to bind receptors on other neurons. Any of these system failures would affect the distribution significantly.


 

  1. Cortisole

When we feel that we are in danger 2or are experiencing conditions of psychological or physical stress, the hypothalamus, located in the brain, gives a mandate to produce cortisol from the adrenal glands.

But when the brain is stuck on a problem, the body constantly releases cortisol and chronic elevated levels can lead to serious problems. Too much cortisol can suppress the immune system, increase of blood pressure and blood sugar, decrease libido, cause acne, and also contributes to obesity and other diseases.


 


 

B. Lactic Acid

Stress stimulates the production 3of lactic acid, aches and pains associated with stress occur when the muscles contract in response to stressful events, increasing the production of lactic acid, leading to pain. People experiencing panic attacks appear to have high levels of lactic acid, a chemical that is produced when the muscles metabolize sugar without enough oxygen. Some drugs and chemicals, such as caffeine, decongestants and drugs for maniac colds, inhalants asthma and imbalance between the thyroid hormone can cause stress.

All this in a prolonged period of stress can from affecting significantly the blood ph, even cause gallic acidosis.


 

C. Serotonin

It is partly responsible for the disposal and our memory and is considered important for the advent of sleep. Indeed, in patients suffering from depression have been observed decreased levels of serotonin in their brain.

There are many researchers who believe that an imbalance of serotonin levels can affect mood in a way that leads to depression. Possible problems include low production of serotonin in the brain cells, the lack of receptors that is able to receive derivatized serotonin reuptake inability to reach the receptors, or deficient in tryptophan. 4If any of these biochemical disorders, researchers believe that this can lead to depression and obsessive-compulsive disorder, anxiety, panic, and even in excess of anger.

However there is a theory that is associated with serotonin how depression develops centers for regeneration of brain cells - a process that some believe to be mediated by serotonin, and constant throughout our lives. According neuroscientist Barry Jacobs, PhD, depression can be caused when there is suppression of new brain cells, and that stress is the most important associated event leading to neurophysiology disorder of the brain and thereby to depression.5

again according to the same teacher to use the common sedative drugs known as SSRIs, which are designed to increase levels of serotonin, also give rise to the production of new brain cells, which in turn allows the treatment depression

Finally we should mention that in nature there are many herbs which have a chemical composition which acts similar to SSRIs and will be reported in subsequent articles.

1 Increasingly sophisticated forms of brain imaging - such as positron emission tomography (PET), a single photon emission computed tomography (SPECT), and functional magnetic resonance imaging (fMRI) - allows a much closer look at the brain than was possible previously.

2 First, the portion of the brain called the amygdala must recognize a threat. Then, it sends a signal to the part of the brain called the hypothalamus, which releases corticotropin releasing hormone (CRH). CRH then tells the pituitary gland to release adrenocorticotropic hormone (ACTH), which tells the adrenal glands produce cortisol.

3 Lactic acidosis is a condition characterized by the accumulation of lactate (particularly the L-lactic) in the body, resulting in too low pH. Is a subtype of metabolic acidosis, where there is excessive acid caused by a problem with the body's metabolism.

Lactic acidosis is usually the result of an underlying acute or chronic medical condition or intoxication. Symptoms usually attributed to these underlying causes, but may include nausea, vomiting, rapid deep breathing and generalized weakness.

4 For many organisms (including humans), tryptophan is an essential amino acid. This means that it is necessary for the survival of these organizations (and people) that can not you can post by organosmous them and therefore must be part of their diet. The (protein) amino acids, including tryptophan and, act as building blocks for the biosynthesis of proteins.

5 http://www.health.harvard.edu/mind-and-mood/what-causes-depression