Consequences of Obesity Obesity is a complex health issue to address. Obesity results from a combination of causes and contributing factors, including individual factors such as behavior and genetics. Behaviors can include dietary patterns, physical activity, inactivity, medication use, and other exposures. Additional contributing factors in our society include the food and physical activity environment, education and skills, and food marketing and promotion.
Onset of depression more complex than a brain chemical imbalance Updated: April 11, Published: June, It's often said that depression results from a chemical imbalance, but that figure of speech doesn't capture how complex the disease is.
Research suggests that depression doesn't spring from simply having too much or too little of certain brain chemicals. Rather, there are many possible causes of depression, including faulty mood regulation by the brain, genetic vulnerability, stressful life events, medications, and medical problems.
It's believed that several of these forces interact to bring on depression. To be sure, chemicals are involved in this process, but it is not a simple matter of one chemical being too low and another too high.
Rather, many chemicals are involved, working both inside and outside nerve cells. There are millions, even billions, of chemical reactions that make up the dynamic system that is responsible for your mood, perceptions, and how you experience life.
With this level of complexity, you can see how two people might have similar symptoms of depression, but the problem on the inside, and therefore what treatments will work best, may be entirely different.
Researchers have learned much about the biology of depression. They've identified genes that make individuals more vulnerable to low moods and influence how an individual responds to drug therapy.
One day, these discoveries should lead to better, more individualized treatment see "From the lab to your medicine cabinet"but that is likely to be years away.
And while researchers know more now than ever before about how the brain regulates mood, their understanding of the biology of depression is far from complete. What follows is an overview of the current understanding of the major factors believed to play a role in depression.
The brain's impact on depression Popular lore has it that emotions reside in the heart. Science, though, tracks the seat of your emotions to the brain.
Certain areas of the brain help regulate mood. Researchers believe that — more important than levels of specific brain chemicals — nerve cell connections, nerve cell growth, and the functioning of nerve circuits have a major impact on depression. Still, their understanding of the neurological underpinnings of mood is incomplete.
Regions that affect mood Increasingly sophisticated forms of brain imaging — such as positron emission tomography PETsingle-photon emission computed tomography SPECTand functional magnetic resonance imaging fMRI — permit a much closer look at the working brain than was possible in the past.
An fMRI scan, for example, can track changes that take place when a region of the brain responds during various tasks. Use of this technology has led to a better understanding of which brain regions regulate mood and how other functions, such as memory, may be affected by depression.
Areas that play a significant role in depression are the amygdala, the thalamus, and the hippocampus see Figure 1. Research shows that the hippocampus is smaller in some depressed people.
For example, in one fMRI study published in The Journal of Neuroscience, investigators studied 24 women who had a history of depression.
The more bouts of depression a woman had, the smaller the hippocampus.Bladder control problems affect the way a person holds or releases urine. A person has urinary incontinence (UI) when urine leaks accidentally.
Talk with a doctor about bladder control problems right away. You may have a bladder control problem if you often need to go right away or you leak urine. Overweight and obesity are conditions caused by an increase in the size and amount of fat cells in the body.
They cause problems like heart disease and diabetes. Learn about causes, risk factors, screening and prevention, signs and symptoms, complications, diagnosis, and treatments for overweight and obesity, and how to participate in clinical trials.
Jul 08, · Stress is bad for your health.
And bad health causes a lot of stress. Poor health and disability are common among people who say they suffer from a . Stress seems to worsen or increase the risk of conditions like obesity, heart disease, and asthma. WebMD offers stress release tips to help you manage stress better - and lower your health risks.
If you have been sitting for long hours in front of the computer, typing your way through a report, or if you have been bending over a sheet of paper as you sketch or write, you would know how painful a back pain is.
But there are more causes of back pain other than simple [ ].
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Obesity is a serious concern because it is associated with poorer mental health outcomes, reduced quality of life, and the leading causes of death in the U.S. and worldwide, including diabetes, heart disease, stroke, and some types of cancer.