Hunger, Heartbeat, Tiredness: What Research Maps About How Autistic People Sense Signals Inside the Body

Byline: Chau Sir / chausir.com

This article summarises public research with AI assistance.

1. What the study looked at

Klein, Witthöft and Jungmann, from Johannes Gutenberg University Mainz in Germany, published a systematic literature review and meta-analysis on 20 August 2025 in Frontiers in Psychiatry (open access). Following PRISMA, they searched PubMed, PsycINFO and Web of Science, with pre-registration on OSF, to map research on interoception in autistic people (sensing signals inside the body, such as heartbeat, tiredness, or hunger). They included 31 studies that met quality thresholds, covering children, adolescents and adults. For cardiac accuracy specifically, five adult studies used comparable tools and could enter a meta-analysis. [1]

2. What the review found

Across those five adult studies taken together, autistic adults and typically developing comparison groups showed no stable, significant systematic group difference on cardiac accuracy. Findings for children and adolescents, and for layers such as self-reported bodily sensibility and how confident people felt about their own performance, were much more mixed: some reports were lower, some higher, some similar.

The authors note that different measurement tools, age ranges and co-occurring conditions likely make a single cut difficult. They also caution against treating “all autistic people cannot feel their bodies” as a settled claim. This is a map of the literature, not proof that any one approach will necessarily help every child notice body signals more clearly. These are descriptive associations and gaps from the current literature. They do not prove that any single factor will bring a particular result. [1]

3. Reading with care

This is a systematic review and meta-analysis. It draws a map of the literature on layers of body-internal signals in autistic people. Samples, ages and measurement formats are not consistent. Overseas school and family rhythms also differ from those in Hong Kong, so the findings are a reference only. Do not assume that “all autistic people cannot feel their bodies,” and do not treat any one layer as necessarily showing a stable group difference from typically developing peers. The review is not a complete picture of any one family. [1]

4. Small things Hong Kong parents can notice

A common Hong Kong scene is a child who says “I do not know if I am hungry” or “I do not know if I am tired or tense,” while adults conclude “they cannot look after themselves” or “they just will not say.” This review is a reminder that “feeling inside the body” has many layers: some are objectively measured accuracy, some are how people describe body feelings, and the two do not always move together. The literature also shows that adult cardiac accuracy may not show a systematic group difference, while child and adolescent findings are more scattered.

In everyday life you can try: use concrete, visible prompts to help the child match body states, for example “do you want a drink / want to sit and rest now,” rather than only asking “how do you feel”; before meals, offer simple choices such as “a little empty / half full / very hungry”; when talking with school, avoid only saying “they cannot express needs,” and ask instead whether a timetable or picture cards preview rest and meals; if the child is very sensitive to noise, masks or uniform tags, and also finds hunger or tiredness hard to name, keep a one-week log of “which outside sensations are easy to talk about, and which inside sensations are hard.” Chinese families sometimes feel “they will naturally look after their body when they grow up”; the literature map instead invites checking whether measurement and ways of expressing raise barriers, then thinking with school about accessible daily arrangements.

From a CRP (Communication, Relationship, Parenting) point of view, you can start with communication and relationship: adults and a trusted person name which body signals the child can match easily and where they get stuck, keep a predictable meal and rest rhythm, and avoid carrying everything alone. The research is a reference only. Every family has its own pace, and there is no need to blame yourself or your child. If body signals and emotional expression keep making life hard for the child and the family, you can check with a parent group or a family support service about ways to walk alongside. If there is an immediate crisis, call 999 or the Mental Health Support Hotline 18111.

Sources

1. Klein, M., Witthöft, M., & Jungmann, S. M. (2025). Interoception in individuals with autism spectrum disorder: a systematic literature review and meta-analysis. Frontiers in Psychiatry, 16, Article 1573263. https://doi.org/10.3389/fpsyt.2025.1573263 (publisher page: https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2025.1573263/full; OA CC BY 4.0)

Disclaimer

Educational information, not a diagnosis or medical advice.

Chau Sir's talks and articles are parent education. They do not provide diagnosis, assessment or treatment, and do not provide medical or medication advice. If needed, please consult a qualified professional.