3. Changes in the Brain
Some people may have lower levels of serotonin simply because changes in the brain have occurred over time. When you get a blow to the head, it can change the way the brain functions. Additionally, there are several diseases that cause damage to the brain or simply change the chemical compounds in the brain. If you are suffering from depression or other related mental health issues, it could simply be because of some changes in your brain. If you have heart conditions or other health issues, this can affect brain function as well. A doctor should be able to determine the underlying cause of these changes. Medications might be prescribed to help balance out the chemicals in the brain, including serotonin levels. These medications should help improve your mood overall as they put the chemicals in your brain back to normal.