When somebody asks us about our health, we usually think only of our "physical" health. But, everyone should also be thinking of our "mental" health which many times directly influences our quality of life (being happy).
We can think of "health" as the opposite of "illness." Do I have a high or low blood pressure, high or low blood sugars, high or "normal" cholesterol,…you get the idea. I might or might not have symptoms, but if I were to be examined by a doctor, and the measurements (blood pressure reading, lab results) suggest that I am not "healthy," I would want to manage my illness to become "healthy" again. I might be counseled on what to eat and what not to eat, encouraged to exercise, and I might even be placed on some medications.
While everyone can see themselves in such a situation, no one wants to admit that they might not be "mentally" healthy. There is still so much stigma attached to mental illness, that some people get offended if one suggests that they or someone in their family might suffer from a psychiatric condition. This could be because many people equate being "mentally" unhealthy with being "crazy" or feel that it is completely in their control not to have any psychiatric symptoms. This could not be further from the truth.
Even though there was a (sad) time when people with psychiatric illnesses were placed in "asylums," a lot has changed since then. It is well accepted in the medical community that psychiatric illnesses are brain illnesses, much like diabetes is an illness of the pancreas and hypertension is an illness of the cardiovascular system. The 90's was called "The Decade of the Brain." Through technological advances (EEG, MRI, fMRI, PET scan, TMS, etc.), we have been able to map the brain, view its structures, understand how its different neuronal circuits interact, and how differences exist in different psychiatric conditions. We can measure neurotransmitter levels in the cerebrospinal fluid (CSF), the fluid that bathes our brains, and even look at our DNA to individualize our treatment. We also know that psychiatric (brain) illnesses are deteriorating illnesses, damaging the brain if left untreated. By no means, do I suggest that we have learned everything there is to know about the brain, but we know enough to help people today more than ever.
One might ask why we do not have any type of measurement or marker that suggests a brain illness, like we have with measuring blood sugars in diabetes. That is a fair question. But before I talk about this, let me just briefly talk about the common flu and its symptoms. Most of us have had the flu at one time or another. People with the flu may feel miserable, tired, having headaches and body aches, and not feeling like doing anything. The doctor will examine you by asking you about those symptoms, rule out other more serious conditions and even differentiate a flu (viral) from a bacterial infection (that needs antibiotics) without getting any lab tests.
Brain (psychiatric) illnesses also present with symptoms. The brain affects how we think, feel, behave, and perceive the world. The brain is also the "command center" of our whole body. When certain brain circuits do not function properly, they can produce different symptoms, affecting cognition (being distracted), emotions (feeling anxious, depressed), perceptions (thinking that people do not like me, people are watching me), and behaviors (sleeping or eating too much or too little). Looking at the symptom patterns, we can usually arrive into a diagnosis. We might order tests to "rule out" other conditions, but we do not necessarily need to order a "diagnostic" test to know that someone suffers from depression, for example. Even if tests are available, we have to look at the risk/benefit ratio of getting those tests done. Checking the serotonin level (a brain neurotransmitter) at the CSF to support the diagnosis of depression will not change our treatment and it actually puts the patient at unnecessary risk by having to do a lumbar puncture (LP) or spinal tap, to access the CSF. Likewise, ordering a functional MRI (fMRI) on everyone with depression will add an unnecessary cost burden to the patient.
Large epidemiological studies suggest that about 20% of US adults have a diagnosable psychiatric (brain) condition at any given year. For the majority of these individuals, their symptoms might be acute and not very severe. Only 12% of those adults (or 2.5% of the total population) have a more severe and chronic psychiatric condition, and for 20% of those individuals (or 0.5% of the population) the illness is so debilitating that it usually leads to disability. These are the individuals with Schizophrenia, but also Bipolar illness, and severe forms of Depression, Panic, and Obsessive-Compulsive disorder.
We know that there is a large genetic component with many psychiatric conditions running in families, just like hypertension and diabetes. Not everyone with a genetic predisposition will develop a psychiatric illness and not everyone will have a predisposition. Expression of the predisposition usually happens under times of stress (mental duress). Persons with psychiatric (brain) conditions are no more responsible for their illness than persons with pancreatic conditions (diabetes).
We treat psychiatric (brain) conditions with counseling about "diet and exercise," education about their illness (like you would educate someone about diabetes), psychotherapy (because brain conditions affect how we feel, think, perceive, etc.), medications as well as stimulation therapies like transcranial magnetic stimulation (TMS Therapy), vagus nerve stimulation (VNS), and electro-convulsive therapy (ECT) when warranted.
We can think of our "mental health" as how well we cope with stress, how satisfied we are with our relationships, with our jobs, and with our life. When we start having persistent problems with our relationships, our job performance, or neglecting our societal roles, that suggest that our brain circuits do not function as well, and we thus may have a psychiatric (brain) illness that needs to be evaluated and managed. Getting timely help not only avoids unnecessary suffering from delayed treatment, but it also helps protect the brain and its circuits from further deterioration and damage.
So, the next time you think about your health, think about both your "mental and physical" health.