Users are asked to share their location with Tinder so the app can recommend people within a certain distance. To make that feature work, Tinder has to record the last known location of each user.
Serotonin is known to be the most responsible in terms of neurotransmitters and depression. Serotonin is responsible for an array of functions most importantly being the mood and perception of a person.
Antidepressant drugs do their work by either increasing the production of neurotransmitters or by breaking them down. There are three major neurotransmitters that are involved in depression. These are called dopamine, norepinephrine, and serotonin. Serotonin is sometimes called 5-HT. When the levels of one or more of these neurotransmitters dip or become unbalanced, depression or other conditions may result. The newest class of antidepressants is called selective serotonin and norepinephrine reuptake inhibitors (SNRI's). The drugs from this class used for depression are Effexor XR (venlafaxine), Cymbalta (duloxetine), and Pristiq (desvenlafaxine). SNRI's are capable of acting on both norepinephrine and serotonin.