There are four regions of the brain, each having a primary chemical or neurotransmitter that is responsible for specific brain functions. With deficient levels of these chemicals, you may see changes in motivation, mental acuity, and mood. Left untreated or ignored, these can develop into serious medical conditions that will require medical intervention. Contact Dr. Berger if you are experiencing symptoms of brain fog or imbalances in LA.

The primary neurotransmitters are serotonin, dopamine, GABA, and acetylcholine. These chemicals are derived from protein precursors or amino acids that can be obtained from the diet and natural supplements. This combination—supplements and diet—in concert with hormone replacement therapy can reduce inflammation, restore and improve brain functions, repair nerve cells and prevent future damage.

Here is a list of the neurotransmitters, their functions, and some characteristics of each.

Dopamine – Brain Energy, Motivation and Creativity

Symptoms of deficiency:

  • Cravings for sugar or caffeine
  • Lightheadedness
  • Fatigue
  • Weight gain
  • Low energy
  • Diminished libido
  • Decreased motivation
  • Memory changes
  • Sleep problems
  • Lack of initiative
  • Increased consumption of alcohol and drugs

Gaba – Brain Rhythm or Calm

Symptoms of deficiency:

  • Trembling, twitching
  • Cravings for carbohydrates
  • Insomnia
  • Anxiety
  • Hyperventilation
  • Cold or clammy hands
  • Palpitations or rapid pulse
  • Ringing in the ears, butterflies in the stomach, lump in the throat
  • IBS/GI disorders
  • High blood pressure
  • Disorganization
  • Memory changes
  • Depression or isolation

Acetylcholine – Brain Speed, Mental Acuity

Symptoms of deficiency:

  • Fat cravings
  • Memory lapses
  • Weight gain
  • Dry mouth
  • Difficulty concentrating
  • Frequent urination
  • Mood changes
  • Agitation
  • Dyslexia
  • Anxiety


With over 25 years of experience in the medical field, Dr. Berger has geared his practice towards the soothing and therapeutic side of cosmetic medicine. By specializing in anti-aging treatment along with cosmetic enhancement, his goal is to help each patient live a long, healthy, and beautiful life. Call us, or complete the form on this page.


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