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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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Amsterdam Police Probe New Blast Claimed by Same Group That Claimed Jewish School Explosion
Police officers stand outside a Jewish school following an explosion that caused minor damages, in Amsterdam, Netherlands, March 14, 2026. Photo: REUTERS/Piroschka van de Wouw
Dutch police are investigating an explosion that damaged an office building in Amsterdam and was claimed by the same extremist organization which also claimed it was behind a recent blast at a Jewish school in the area, a police spokesperson said on Monday.
It was not immediately clear if the building has a link to Amsterdam‘s Jewish community.
Officers were investigating the explosion, which led to a small fire that was quickly extinguished by security guards and caused minor damage, the spokesperson said, adding that police were examining whether the two incidents were indeed linked.
Sienna Investment Managers, which manages the building, did not immediately reply to an emailed request for comment.
Saturday’s explosion, for which the same group claimed responsibility, caused minor damage to a Jewish school. Amsterdam Mayor Femke Halsema and Dutch Prime Minister Rob Jetten condemned the attack.
The group has also claimed earlier attacks on synagogues in Rotterdam and in neighboring Belgium’s Liege. The attacks had already triggered heightened security at Jewish sites in Amsterdam.
Justice Minister David van Weel said on Saturday that a link between the explosions in Amsterdam and Rotterdam could not be excluded, but did not confirm any claims made on social media by the group.
Concerns about possible attacks against Jewish communities around the world have risen following the US and Israeli attacks on Iran and the subsequent response from Tehran.
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Israel Says Lebanese Displaced Won’t Return Until Its Own Citizens Are Safe
Israeli soldiers walk next to military vehicles on the Israeli side of the Israel-Lebanon border, amid escalation between Hezbollah and Israel, and amid the US-Israeli conflict with Iran, in northern Israel, March 16, 2026. Photo: REUTERS/Avi Ohayon
Israel on Monday warned that displaced Lebanese driven from their homes by its military campaign against the terrorist group Hezbollah would not be able to return until the safety of Israelis living near the border was ensured, as Israeli troops pushed into new parts of southern Lebanon.
In a briefing, Israeli military spokesperson Lieutenant Colonel Nadav Shoshani told reporters that soldiers were now conducting ground operations in “new locations,” describing the latest offensive as “limited and targeted.”
The extended operation began days after Defense Minister Israel Katz said the military had been ordered to expand its campaign. He later warned that the country could face territorial losses and damage to its infrastructure unless Hezbollah was disarmed.
Israel‘s military, which has occupied five positions in southern Lebanon since a November 2024 ceasefire with Hezbollah, sent additional forces into the country after Hezbollah fired a salvo of rockets on March 2, dragging Lebanon into an expanding regional war.
Hezbollah, a Shi’ite Muslim terrorist group backed by Iran, said its attack was in retaliation for the killing of Iran’s supreme leader on Feb. 28, the first day of the US-Israeli war with Iran. Israel has responded with an intensive bombing campaign on Lebanon.
COMPARISON WITH GAZA
The military has framed the ground offensive, launched after March 2, as a defensive effort to protect northern Israel from Hezbollah attacks, which it says have averaged at least 100 rockets and drones a day and have reached as far as central Israel.
More than 880 people in Lebanon have been killed, according to Lebanon’s health ministry, and more than 800,000 have been driven from their homes, many from the south as well as from areas near the capital, Beirut.
On Monday, Katz linked the return of displaced Lebanese residents to the safety of Israelis living near the border.
“Hundreds of thousands of Shi’ite residents of southern Lebanon who have evacuated or are evacuating their homes in southern Lebanon and Beirut will not return to areas south of the Litani line until the safety of northern residents is ensured,” he said in a statement.
He said the military had been instructed to destroy “terrorist infrastructure” in villages in southern Lebanon near the border with Israel, drawing a comparison to operations in cities in the Gaza Strip that were largely destroyed by Israeli forces.
Katz also suggested that Hezbollah’s leader, Naim Qassem, could face a fate similar to that of his predecessor, and to Iran’s supreme leader, both of whom were killed in Israeli strikes. Qassem said last week threats against his life were “worthless.”
ISRAELI TROOPS ADVANCE WEST
Over the weekend, Israeli troops encircled the key southern Lebanese town of Khiyam and were advancing west toward the Litani River, a move that could leave large swathes of southern Lebanon under Israeli control, Lebanese security sources told Reuters.
Israeli troops battled Hezbollah fighters in southern Lebanon throughout the day on Monday, and advanced towards Bint Jbeil, a Lebanese village and Hezbollah stronghold located about 4 km from the border with Israel, the sources said.
Two Israeli officials said on Sunday that Israel and Lebanon were expected to hold talks in the coming days aimed at securing a durable ceasefire which would see Hezbollah disarmed.
A Lebanese source familiar with the matter said it didn’t seem talks with Israel would be taking place soon, though they would happen eventually.
Israel‘s Ambassador to the United Nations Danny Danon told reporters that a “few players were trying to mediate and host talks,” adding: “I believe the next step will be talks but first we have to degrade the capability of Hezbollah.”
Under the November 2024 ceasefire, Hezbollah was to pull back from southern Lebanon as the Lebanese military took over.
Israel said Lebanon never upheld its part of the deal, continuing near-daily air strikes against what it said were Hezbollah positions and weapons.
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Still Too Early To Silence the Lions Roaring Above Iran
The sky is illuminated as an Iranian missile lands in Israel, amid the US-Israeli conflict with Iran, as seen from Tel Aviv, Israel, March 12, 2026. Photo: REUTERS/Dylan Martinez
The Iran war is full of surprises. The United Nations Security Council, often a hostile arena for Israel, condemned Tehran — not Washington and Jerusalem — on March 11 for Iran’s war conduct, particularly its strikes on Gulf Arab countries uninvolved in the conflict.
The Gulf strikes are part of the Islamic Republic’s strategy to increase international pressure to force the war’s premature end. This is intended to prevent the United States and Israel from achieving their ideal scenario — the fall of the ayatollahs’ regime — or an acceptable outcome — stopping Iran’s offensive military capabilities.
Terrible as war is, this one should continue until more of its initial goals are achieved.
That’s not to say there haven’t been successes. Supreme Leader Ali Khamenei, the Islamic Revolutionary Guard Corps (IRGC) commander in chief, the minister of defense, the head of the military council, the deputy intelligence minister, the commander of the IRGC Aerospace Force, and other Iranian leaders met at Khamenei’s compound in Tehran on February 28. All of them died there.
In the devastating opening salvo, the Iranian leaders who had long called for Israel’s destruction and chanted “death to America” were instead killed by the countries they wished to harm.
Battle damage assessments can be difficult amid the fog of war, but some things are clear. The United States has struck approximately 6,000 targets, including more than 90 naval ships, and enjoys air superiority over large swaths of Iran. Iran’s drone and missile launches have declined by around 90 percent compared to the first day of the war. Israel assesses that 75 percent of Iran’s missile launchers have been destroyed, and the United States and its partners have intercepted thousands of Iranian drones.
US and Israeli forces are fighting wingtip-to-wingtip in the skies over Iran, and the Gulf Arab states’ fury at Iran for attacking them may portend favorable developments in the regional defense architecture envisioned in the Abraham Accords.
But there’s more work to be done. The Islamic Republic has struck at least 12 countries in an attempt to create economic pressure for the war to end.
A de facto blockade of the Strait of Hormuz is reducing global shipping and driving up commodity prices, especially oil and gas. And though he hasn’t been seen since being injured early on in the conflict, Iran’s new supreme leader, Mojtaba Khamenei, has pledged to leverage the Strait’s closure to squeeze the global economy even further to try to get Gulf countries to pressure the United States to halt the operation.
With further damage to the world’s economy looming, the United States and its partners may eventually have to try reopening the Strait. But even without doing so, options exist to reduce the blockade’s impact. The International Energy Agency already released 400 million barrels of oil from reserves, and plans are reportedly being considered for US naval and other escorts through the narrow waterway.
There’s also the regime’s nuclear program to consider. While the damage done to nuclear facilities at Isfahan and Natanz remains largely unclear, satellite imagery indicates that they have been struck during the campaign. Israel did confirm on March 12 that it struck Taleghan 2, a site utilized by the Islamic Republic for explosives testing related to its nuclear program.
But with the regime’s highly enriched uranium supply reportedly buried deep under mountains in fortified Iranian facilities, air power can only do so much damage. It’s unclear if the US or Israel are considering special operations missions to try and make sure that uranium can’t be used in a future nuclear weapon.
Meanwhile, Israel has used its air power to weaken Iran’s tools of repression.
Since the beginning of the war, Iranians have reported that checkpoints run by the regime’s Basij forces have increased in cities around the country. The “religious” militia has also been running more patrols. The Basij seek to prevent a repeat of the massive anti-regime protests in January, in which more than 30,000 innocent Iranians were reportedly slaughtered.
Earlier this month, Iranian state media reported that at least 10 members of the Basij were killed in drone attacks at several checkpoints around the Iranian capital. Later, the Israel Defense Forces confirmed carrying out the precision strikes, pledging to “continue to strike at the mechanisms and operatives of the Iranian terror regime wherever they operate.”
The most optimistic forecast for this conflict is the eradication of the Islamic regime at the hands of historically oppressed Iranian civilians. For now, conditions on the streets are still far too volatile to resume protests.
Israeli eyes in the sky, combined with targeted strikes against Basij forces, can help tilt the odds in favor of the protesters seeking to take their country back from tyrants. A lesser success would be weakening the regime’s nuclear, ballistic, and drone capabilities to dramatically decrease the threat Iran poses to the United States and the world. The United States and Israel have already severely weakened the Islamic Republic, but the mission is far from over.
David May is the research manager and a senior research analyst at the Foundation for Defense of Democracies (FDD), where Aaron Goren is a research analyst and editor. For more analysis from the authors and FDD, please subscribe HERE. Follow David and Aaron on X @DavidSamuelMay and @RealAaronGoren. Follow FDD on X @FDD. FDD is a Washington, DC-based, nonpartisan research institute focusing on national security and foreign policy.