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A German town built a granary atop its Jewish cemetery. Now the bones are yielding insights about Ashkenazi DNA.
BERLIN (JTA) – The city of Erfurt in central Germany is home to an impeccably restored medieval synagogue made possible because local Jews had been expelled long before the Nazis began their campaign to destroy Jewish sites.
Now, Erfurt’s long-hidden Jewish past is again offering new insights — this time about the genetic history of Ashkenazi Jews.
Human remains from a medieval Jewish cemetery in Erfurt have allowed what researchers say is the largest ancient Jewish DNA study to date. Conducted without disinterring any remains, in keeping with Jewish law, the study published Wednesday in the scientific journal Cell found that Erfurt’s medieval Jewish community was more genetically diverse than their modern-day cousins, and carried many of the same Jewish genetic diseases — such as Tay Sachs and cystic fibrosis — that affect Ashkenazi Jews today.
“There have been many previous DNA studies, but not of Jews,” said geneticist Shai Carmi, a professor at the Hebrew University of Jerusalem, whose search for study material led him to an archaeological dig at the Jewish cemetery in Erfurt. He and his collaborators were able to analyze DNA of 33 individuals who died between 1270 and 1400, using teeth they found there.
The study follows a similar analysis revealed in August by researchers in England, who studied the DNA from skeletons found at the bottom of a medieval well and concluded that the remains were likely of victims of an antisemitic massacre in 1190. Analysis of six individuals prior to their identification as Jewish revealed that Ashkenazi Jews developed a unique genetic variation centuries earlier than realized.
The Erfurt analysis also includes samples from before the epidemic of Black Death that was until recently understood to have created the genetic “bottleneck” that created the genetic markers common among Ashkenazi Jews today.
Erfurt’s Jewish settlement existed from the 11th to 15th century, with a brief gap following a 1349 massacre perpetrated after the Jews were falsely blamed for causing the bubonic plague. Surviving Jews returned there, but after all Jews were expelled once and for all in 1454, the city built a granary on top of the Jewish cemetery.
Karin Sczech participates in the excavation at the medieval Jewish cemetery of Erfurt. (Courtesy of TLDA Ronny Krause)
In 2013, the city approved the repurposing of the unused granary into a parking lot. Because it was an historic site, a rescue excavation was initiated, overseen for the State of Thuringia by German archaeologist Karin Sczech.
Meanwhile, Carmi had been looking for Jewish cemeteries anywhere in the world “where we could analyze remains already excavated,” he told JTA in a telephone interview from Jerusalem. “I consulted historians and eventually reached the archeologist in Erfurt.” Fortunately, he said, “they still hadn’t reburied the remains.”
He approached Sczech, who later became a co-author of the new study. In 2018, with a supportive judgment from Rabbi Ze’ev Litke — an Israeli expert on genetics and Jewish law — and permission from Erfurt’s then-rabbi, Benjamin Kochan, work began to extract and analyze DNA from detached teeth found in the graves. (About 500 Jews live in Erfurt today, most of them having migrated from the former Soviet Union since 1990.)
American geneticist David Reich picked up the teeth and brought them back to the department of human evolutionary biology at Harvard University in Cambridge, Massachusetts, where drilling and DNA extraction took place.
While the skeletons were reburied, the teeth are still stored at the research institutes where they have been analyzed, in case scientists need to retest to verify the result.
The project provides an ethical basis for studies of ancient Jewish DNA, Carmi said. “Of course we couldn’t just go to a cemetery and dig and take out skeletons; this would be prohibited,” he said, referring to Jewish law prohibiting the removal of bones from where someone was buried.
But Litke opined that the study could be done, because the bones already had been disturbed for an unrelated reason. “He recommended using teeth, as the analysis does almost no damage,” Carmi said.
There are many motivations to study Jewish DNA: One can find lost relatives going back a few generations, and answer questions about Jewish origin of partners intending to marry. But the goal of Carmi’s team was “to fill the gaps in our understanding of Ashkenazi Jewish early history.”
There are several non-destructive ways to obtain DNA from human remains, said Carmi, who also works as a consultant to an Israeli firm that helps clients trace their genetic roots.
“You can take an almost microscopic slice of bone and extract DNA in a solution, or put the entire bone in a solution and extract the DNA without drilling, without disturbing the dead. This opens the way to doing studies even without teeth,” he added.
His team found that the Erfurt community appeared to fit into two genetically distinct groups, descending either from Middle Eastern or European populations. This genetic variability no longer exists, Carmi said.
At the same time, Carmi said, the analysis found remarkable continuity in the local community, as well. “One third of the Erfurt individuals descended from one woman through their maternal lines,” he said, adding that evidence suggested that she lived between 1,000 and 2,000 years ago.
In a press statement, geneticist Reich of Harvard said the work “also provides a template for how a co-analysis of modern and ancient DNA data can shed light on the past. Studies like this hold great promise not only for understanding Jewish history, but also that of any population.”
The research team, with more than 30 scientists, included Hebrew University’s Shamam Waldman, a doctoral student in Carmi’s group, who performed most of the data analysis.
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Trump is still going after Palestinians in the U.S. Jews must keep protesting those antidemocratic efforts
Mohsen Mahdawi, a 35-year-old Palestinian, has been a permanent resident of the United States for the past 14 years. And as the U.S. government presses ahead with efforts to deport him over his pro-Palestinian advocacy at Columbia University, more than 1,000 Jews have come forward to defend him by signing an open letter I authored.
Why? At a time of particularly fractious division in the Jewish community over issues related to the Israeli-Palestinian conflict, how is it possible that so many Jews have come together in support of a Palestinian activist?
One key reason is that the government is seeking to infringe upon the rights of someone who neither engaged in acts of violence nor supported them. In July, the Second Circuit Court overruled a prior district court judge’s dismissal of the deportation case against Mahdawi, giving new energy to the government’s efforts.
Mahdawi has committed no crime; the government has not even bothered to accuse him of doing so. Instead, he simply gave voice to his belief in the necessity of freedom for his people.
Jews of all ideological stripes can and should agree that it is wrong to penalize someone for the expression of their political views. They don’t need to go far back in time to recall that such tactics have often been used against Jews themselves — in the Soviet Union to suppress refuseniks who sought to manifest their identity as Jews; in the U.S. during the McCarthy era; and, most ominously, during the dark age of Nazi totalitarianism.
In drafting an open letter defending Mahdawi, focused on the attack on his political rights, I hoped that a diverse range of Jews would be willing to acknowledge that whether they agree or disagree with Mahdawi, the government’s targeting of him represents a threat to all of us.
I know Mahdawi personally. We met at a peace-building retreat in the summer of 2024. He was an enormously compelling presence who drew people together through his preternatural calmness and clarity of purpose.
Since then, I have come to see him as a unifier, not a divider. He’s an advocate of peace, not war. And he has the potential to become a leader of enormous charisma and potential.
So why has the Trump administration devoted so much attention to persecuting a Palestinian student who has repeatedly called out antisemitism, including at a Palestinian solidarity rally at Columbia?
The sad reality is that Mahdawi, like his fellow Columbia student Mahmoud Khalil, is being persecuted for the crime of being Palestinian.
The U.S. State Department came up with the logic-defying claim, in March 2025, that Mahdawi’s activities at Columbia “would have a potentially serious adverse foreign policy consequences and would compromise a compelling U.S. foreign policy interest.” If this administration truly wishes to advance its foreign policy interests, then it should focus on reconstructing Gaza and building a framework for peace between Israelis and Palestinians, not targeting a devoted adept of non-violence like Mahdawi.
Many who signed the letter in support of Mahdawi joined in for the simple reason that they believe it is un-American to discriminate against people on the basis of their political views. Some who added their names felt, as I did , that there was another compelling reason to sign on: that Mahdawi’s activism gives the lie to the prevalent myth that to be pro-Palestine is to be antisemitic. This proposition gets buried in the raging discourse around antisemitism and Israel today.
It is essential to recognize that support for the cause of Palestinian freedom and self-determination is not the political or moral equivalent of antisemitism. It is a precondition to a world in which Israeli Jews and Palestinians live peaceably together. And it is a cause that Jews, by virtue of their own historical experience of exile, should be eminently capable of both understanding and supporting.
Mohsen Mahdawi perfectly exemplifies the position. He is fierce in his advocacy for Palestinian rights. And he is fierce in his opposition to all forms of identity-based discrimination, including and especially, antisemitism. He deserves better from the U.S., and we Jews must vigorously oppose the profound miscarriage of justice being directed against him.
David N. Myers teaches Jewish history at UCLA.
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Lawmakers seek 100-foot buffer zone around houses of worship to protect prayer goers from protests
(JTA) — A bipartisan group of lawmakers introduced a federal legislation Thursday in the House and Senate aimed at protecting houses of worship from disruptive demonstrations, following a series of protests outside of synagogues this year.
The Right to Worship Act was introduced by Sens. Ted Cruz, a Texas Republican, and Elissa Slotkin, a Michigan Democrat, alongside Reps. Brad Knott, a North Carolina Republican, and Tom Suozzi, a New York Democrat. It would establish a 100-foot “buffer zone” around houses of worship during religious services — mirroring similar legislation recently enacted in New York.
“The First Amendment guarantees every American the right to freely exercise their faith, and Congress has a duty to ensure that guarantee is met,” Cruz said in a statement Thursday.
The legislation would also establish civil penalties for offenders and provide pathways for individuals, including state attorneys, to seek court orders and damages in federal court. While the legislation would target protesters who knowingly disrupt scheduled religious services, houses of worship would not be required to make their schedules public.
The bill’s sponsors say the measure is aimed at conduct rather than the content of protesters’ speech.
“No one should have to push through a hostile crowd or shout over a bullhorn in an attempt to pray,” said Jonathan Greenblatt, the CEO and national director of the Anti-Defamation League, which helped lawmakers draft the legislation.
It’s the latest attempt at passing federal legislation aimed at insulating houses of worship from protest, following Suozzi’s “SACRED Act” legislation, a similar bill he introduced in April but which has not progressed in the House.
Those efforts have now been joined by Slotkin, who is Jewish, and Cruz, who has often taken aim at antisemitism within the Republican coalition over the past year.
“Exercising your right to worship should not require you to exhibit particular courage as you enter your synagogue, church, mosque, temple, mandir, or gurdwara,” Suozzi said in a statement.
The New York City Council passed a local buffer zone bill in March following a series of pro-Palestinian protests outside of synagogues that hosted Israeli real estate expos. While Jewish groups and leaders heavily advocated for the measure, it also faced opposition from civil rights leaders who said it would have a chilling effect on First Amendment protections.
This article originally appeared on JTA.org.
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Over 95% of Canadian Jewish university students report exposure to antisemitism
(JTA) — Nearly all Jewish students surveyed on Canadian university campuses said they have experienced or witnessed antisemitism, according to a new government-commissioned report.
The survey from the Department of Canadian Heritage found that 95.7% of Jewish students said they were exposed to antisemitism, with 70% saying their university did not take antisemitism seriously and 22% reporting physical violence against Jews.
“Antisemitism on Canadian campuses is neither isolated nor episodic,” said Jack Jedwab, the report’s main author, at a press conference in Ottawa on Wednesday. “It can reasonably be described as systemic.”
The surveyed students anonymously detailed rhetoric, discriminatory treatment, vandalism, intimidation and physical attacks from their classmates as well as professors and administrators. Some 45% said they experienced Holocaust denial or distortion often or sometimes, and 65% said they encountered it “at least rarely.”
One respondent said they had witnessed a friend who wears a kippah being chased out of a school building by a group of students who shouted, “There is a Jew … let’s get him.”
Another student described a professor writing that “we need to kill all Zionists, that she had worked with them and saw how evil they were.” Students also said they were pressured by peers and professors to give their opinions on Israel because they were openly Jewish.
Some 36% of respondents complained about course content or classroom discussions that “they experienced as antisemitic or biased,” while 34% said “a professor introduced Jews, Judaism, Israel, or Zionism when unrelated to the course subject.”
The survey, out Wednesday as part of a report titled Campus Antisemitism and Student Experiences, included about 900 Jewish students from schools across Canada. It was originally conducted for the government’s special envoy on antisemitism, a role that Prime Minister Mark Carney’s administration dissolved alongside an Islamophobia envoy earlier this year.
Carney replaced those offices with a new Ministerial Advisory Council on Rights, Equality, and Inclusion, which he announced in June after saying that the country was “failing Jewish Canadians.” The new council was introduced as a push to unify the government’s approach toward combating systemic prejudice, but some Jewish groups decried the elimination of distinct envoys.
Pressure has mounted on Carney’s administration to stem the tide of antisemitic attacks in Canada since 2023, including gunfire at Jewish schools and synagogues and attacks on Jewish businesses and community centers.
On the same day the report was released, an Oklahoma-based organization called Jewish Tulsa made news for urging President Donald Trump’s administration to offer refugee status to Jewish Canadians.
“With the urgency around the challenges and the inaction we see in Canada, an asylum pathway makes sense,” Joe Roberts, who leads the conservative think tank, told The Canadian Press. He said that his family moved from Ontario to Tulsa after witnessing antisemitic graffiti in his neighborhood.
Martha Piper, former president of the University of British Columbia, said the campus antisemitism report revealed “a shocking presence of campus antisemitism throughout this country along with a troubling institutional failure to respond.”
“The results suggest a university culture that is not welcoming to Jewish students and systemically tries to exclude and vilify them,” said Piper.
This article originally appeared on JTA.org.
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