An Australian cohort, and how thin this evidence base still is

Ask what a genocide does to the people who share a family and a homeland with those living it, but who are ten thousand kilometres away, and the honest first answer is that the published evidence is remarkably thin. The authors of this study say so themselves, in their opening sentence: “There is a lack of empirical research on the mental health risks faced by populations living in high-income multicultural countries during a war in their country of origin.”

The study is “The psychological impact of conflict in the Middle East from 2023 to 2025 on Australian communities: a prospective cohort study”, published in The Lancet Regional Health – Western Pacific on 22 July 2025 (DOI 10.1016/j.lanwpc.2025.101639). It is prospective, which is what makes it valuable: 410 women resident in Australia were assessed at baseline between August 2021 and March 2023 — before — and again between July 2023 and December 2024. 17.1% had a direct connection by birth or family to Lebanon, Gaza or the Palestinian territories; 34.1% were other migrants; 48.8% were Australian-born.

The finding, in the paper’s own words, is that women connected to Lebanon, Gaza and the Palestinian territories experienced a “significantly greater increase in PD symptoms” — PD being panic disorder, as the paper defines it and poorer quality of life than Australian-born women, together with “significantly greater increases in concerns about family overseas” and about the ability to return home in an emergency. That last item is the specific texture of diaspora grief and the reason it is not simply news-consumption distress: the anxiety attaches to named people, and to a door that may not open.

What this study is not. It is a cohort of women of childbearing age in one country; the Middle East–Lebanon/Gaza/Palestinian-territories group is seventy women, of whom the paper states 87.1% were of Lebanese heritage — leaving roughly nine connected to Gaza or the Palestinian territories, never analysed apart from the rest. It is not a study of Palestinians, and cannot be read as one. It cannot carry a general claim about the Palestinian diaspora, and this archive does not make one from it.

And the gap is the point. Searching the peer-reviewed literature for studies of Palestinian communities in the United States or Britain after October 2023 returns essentially nothing. There is a large and growing body of work on Gaza, on the West Bank, on Palestinian refugees in Jordan and Egypt, on Palestinian health workers — and almost nothing on the millions of Palestinians who have spent these years going to work, raising children, and refreshing a phone for news of a cousin. That silence is not evidence that nothing is happening. It is evidence about who gets studied. Until it is filled, the record of what it costs the diaspora rests where it always has: on first-person account, on clinicians speaking from practice, and on what people say to each other.

Why it matters

• The only prospective, before-and-after measurement of diaspora impact this archive could locate — valuable for its design, not for what it can say about Palestinians.
• It isolates the mechanism — fear for named relatives, and the inability to reach them — rather than treating distress as a general mood.
• It marks a real hole in the evidence base, which an archive is obliged to say plainly rather than paper over.

Key resources

• The psychological impact of conflict in the Middle East from 2023 to 2025 on Australian communities — full text