Anxiety, depression, apathy, irritability, mood fluctuations and sleep disturbance could be stand-alone symptoms or an indication of other underlying issues such as hormonal or thyroid imbalance, cortisol fluctuations or even digestive disorders. A thorough assessment would help determine the causes of your symptoms and the best course of action.
Neurotransmitters, our brain hormones, such as serotonin, dopamine, GABA, adrenalin and noradrenalin could be objectively assessed through functional tests such Organic Acid Testing (OAT). Certain vitamins, minerals and amino acids are crucial for a healthy and balanced production of neurotransmitters and will require optimization to resolve mood and sleep disorders. Other underlying causes such as adrenal fatigue or hormonal imbalance may also be relevant to asses, depending on other symptoms you may have.