A cold-natured person is someone who more often feels cold than warm. Cold-natured people tend to be cold even when others around them are warm or when they experience higher temperatures.
A 2004 study done by researchers at the University of Florida published in the Journal of Neuroscience provides evidence that some nerve cells react to things other than temperature when creating the sensation of being cold. Biochemicals, hormones and proteins in a cold-natured person's body play a role in determining a cold feeling despite outside temperatures feeling warm. This explains why factors such as depression or menopause sometimes play a role in a person being cold- or hot-natured.