Health16:34 · 4h ago

Research Highlights Sixth Sense of Interoception and Its Impact on Mental Health

WallaCenter

Translated & summarized from Walla by baba

Key points

01Interoception is a sixth sense involving awareness of internal bodily signals like heart rate and hunger.
02Women show lower accuracy than men in detecting heart rate signals, possibly explaining higher anxiety and depression rates.
03Interoception influences mental health conditions such as anxiety, depression, PTSD, and eating disorders.
04People with stronger interoception experience more stable moods despite hunger fluctuations.
05UCLA research shows some patients have impaired hunger signal recognition due to neural processing differences.
06The scientific community debates the concept, with some rejecting the term and others proposing many more human senses.

In this story

People

Shahar Shahar, Psychologists from Royal Holloway University, Psychologists from University College London, Lead researcher from University of Tübingen, Senior researcher from UCLA, Cognitive scientist from a leading technology institute

OrganizationsRoyal Holloway University, University College London, eBioMedicine, University of Tübingen, University of California Los Angeles, Frontiers in Psychology

PlacesLondon, Germany, Los Angeles

The story · English

A comprehensive analysis of 93 studies reveals significant differences in interoception, the ability to sense internal bodily signals, between men and women, with women showing lower accuracy in heart rate detection tasks. Interoception, often described as a 'sixth sense,' involves perceiving internal bodily cues such as heart rate, breathing, hunger, and internal temperature, which influence physical well-being and emotional states. Unlike external senses like sight or hearing, interoception helps regulate bodily balance by signaling needs such as thirst or temperature discomfort.

Researchers from Royal Holloway University and University College London emphasize interoception's critical role in maintaining bodily homeostasis and its emerging connection to mental health conditions including anxiety, depression, PTSD, and eating disorders. Disruptions in interoceptive awareness may cause heightened sensitivity to internal signals, potentially exacerbating these conditions. For example, individuals with anxiety might become overly aware of their heart rate in social situations, increasing discomfort.

A 2024 study published in eBioMedicine found that people with stronger interoceptive abilities experience more stable moods despite hunger, suggesting a link between internal bodily awareness and emotional regulation. Another study at UCLA used an ingestible vibrating capsule to assess interoception, discovering that some patients struggle to recognize hunger signals even after weight normalization, due to altered neural processing rather than conscious neglect.

Despite growing evidence, the concept of interoception remains debated. A provocative 2024 opinion piece in Frontiers in Psychology challenges the term's validity, arguing it oversimplifies complex phenomena. Meanwhile, some scientists propose humans possess up to 33 distinct senses. Overall, these findings highlight that human sensory experience extends far beyond the traditional five senses, with interoception playing a vital yet underappreciated role in health and well-being.

Read the original at Walla