Tranquilizers, prescribed to reduce anxiety and agitation, or even drugs such as sleeping pills can act on memory by reducing it, but they are not the only ones since antihypertensive and antidepressant drugs can also be responsible.
Certainly, since some types of drugs may be more harmful than others, when the person undergoing treatment verifies a decrease in memory on himself or herself he or she would do well to report the fact to his or her physician for a substitution of the drug in the therapy.

Mood swings: do you suffer from them too?
Seasonal changes, it is known, do not help to maintain
mental and physical balance and can be affected on many fronts. Disorders
digestion, difficulty sleeping, nervousness, mood swings,
excessive responsiveness.