You’re depressed
You should know that situations which make us stressed, nervous and scared have a huge impact on both the volume and odor of sweat. But when a person is depressed that response to stimuli declines. One German-Swedish study found that this reduced response was present in up to 97 percent of depressed patients who later committed suicide. “It was probably the case that certain nerve cells in the hippocampus are damaged by depression and negative stress,” Lars-Hakan Thorell, one of the researchers behind the study, said in a press release.