Died young in terrible agony. Doctors were able to diagnose Botticelli's Venus from paintings 500 years later
Sandro Botticelli's painting "The Birth of Venus" is one of the main and most famous symbols of the Renaissance era. But behind the ideal, serene face of the goddess emerging from the sea foam, lies a real human tragedy. The model Simonetta Vespucci, known as the most beautiful woman in Florence, died very young, having endured terrible suffering before her death. An international group of researchers announced in 2026: they finally know what exactly killed the Muse of the Renaissance.
The painting "The Birth of Venus", for which Simonetta Vespucci served as the model for the goddess. Sandro Botticelli, 1482—1486. Uffizi. Photo: Wikimedia Commons
The famous "Birth of Venus", which is now preserved in the Uffizi Gallery, was painted after Simonetta's death. This monumental work became a revolution in Western art and immortalized the image of the young woman. The enamored Botticelli would paint her face until the end of his days. For more than five centuries, historians believed that the girl died of consumption (tuberculosis).
However, a new study, published in the authoritative medical journal Endocrinology, Diabetes & Metabolism, claims that a rare and aggressive pathology was the cause of the tragedy.
"Beyond Compare"
Simonetta Cattaneo was born in 1453 in Liguria. At 16, she married Marco Vespucci — a relative of the very Amerigo Vespucci, after whom America would later be named.
Moving to Florence, the girl caused a real sensation. She literally charmed the local elite, including the city's rulers — the brothers Lorenzo and Giuliano de' Medici. The poet Angelo Poliziano gave her the title "Beyond Compare" (La Sans Par).
However, her most devoted admirer became the artist Sandro Botticelli. He adored Simonetta and, many years after her death, bequeathed to be buried at her feet in the Church of Ognissanti.
In the spring of 1476, Florence was shocked by the news: the brilliant 23-year-old girl fell ill. The tragedy began unexpectedly during one of the balls, when in the middle of a dance, Simonetta suffered a severe nosebleed. She collapsed unconscious, and no one could stop the blood.
Thanks to preserved correspondence between Simonetta's husband and Lorenzo de' Medici, modern researchers were able to accurately reconstruct the clinical picture of her last days.
The young woman suffered from continuous nosebleeds, nasal discharge, unbearable headaches, high fever, and vomiting. She experienced confusion and severe hallucinations.
A concerned Lorenzo de' Medici sent his best physician, Maestro Stefano, to her. He immediately began to argue with Vespucci's family doctor, Maestro Moses. The latter insisted that the girl had ordinary consumption and prescribed meaningless treatment. In April 1476, after terrible suffering, Simonetta passed away.
Diagnosis from Botticelli's Canvases
A team of doctors from Italy and the USA, led by Professor Paolo Pozzilli, carefully studied not only historical letters but also Botticelli's paintings. They concluded that the girl was killed by pituitary tumor apoplexy — a sudden hemorrhage or infarction in an adenoma.
Working with the canvases, the scientists discovered a series of medical clues. The main evidence was the correlation of infertility with strange details in the paintings.
It is known that Simonetta never had children, and her husband remarried after her death and had nine offspring, which confirms that the health problems were with the wife.
Allegorical Portrait of a Woman (Simonetta Vespucci). Sandro Botticelli, c. 1480—1490. Private collection. Photo: Wikimedia Commons
At the same time, in one of his allegorical portraits, Botticelli depicts Simonetta with milk spurting from her breasts. Doctors consider this clear evidence of galactorrhea — pathological milk discharge, which is often found in pituitary tumors (prolactinomas).
Another clue was provided by artificial intelligence. Modern algorithms analyzed five portraits of Simonetta from different years and confirmed that the girl's facial features and jaw gradually increased and changed. This is a classic symptom of excess growth hormone secreted by an adenoma.
Furthermore, attentive viewers of "The Birth of Venus" often notice a slight squint (strabismus) in the goddess. In the era of Mannerism, this even became a fashionable detail, but from a medical point of view, a large pituitary tumor could press on cranial nerves, causing visual impairment and eye asymmetry.
What Caused the Death
According to scientists, Simonetta's pituitary tumor had been growing for more than a year. It was expanding towards the sphenoid sinus of the nose, which explains the absence of complete blindness usually caused by such formations. Tumor rupture and hemorrhage (apoplexy) are often provoked by a sudden drop in blood pressure or trauma. Researchers propose two historical versions of what could have been the fatal trigger.
The first version links the tragedy to dancing. During the Renaissance, balls required significant physical endurance, and rapid movements and jumps could have been the mechanical impetus that led to the rupture of blood vessels in the tumor directly during the celebration.
The second version is more grim: historical chronicles and poems hint that on the banks of the Arno River, Simonetta may have fallen victim to an ambush or violence from Alfonso II D'Aragona, Duke of Calabria, known for his immoral behavior. Severe stress or a physical blow could well have triggered a brain hemorrhage.
More than five centuries after her death, modern science has finally vindicated the Florentine physician Stefano, who did not believe in consumption and sought another cause for the illness. Simonetta Vespucci died not from the romantic "disease of aristocrats", but from an acute endocrine disease. However, for the whole world, she forever remained Venus, floating carefree to the shore on a giant seashell.