During ancient Egyptian mummification, embalmers removed nearly every major organ from the body, but they deliberately left the heart in place. The Egyptians believed the heart was the seat of intelligence, emotion, memory, and moral character. Without it, the deceased could not pass into the afterlife.
What the Heart Meant to Ancient Egyptians
To the Egyptians, the heart did everything we now attribute to the brain. It was where you thought, felt, remembered, and made moral judgments. The Egyptian concept of the heart actually encompassed three distinct ideas: the physical heart (haty), the spiritual heart (ib), and a broader sense of the heart as the seat of intelligence and personality. This made it the single most important organ in the body, both in life and in death.
The brain, by contrast, was considered worthless. Embalmers removed it by inserting a long metal hook through the nose and pulling it out in pieces. It was discarded. The heart stayed because it was you: your thoughts, your identity, your moral record. Destroying or removing it would have been like erasing the person entirely.
How Mummification Handled the Other Organs
The embalming process followed a specific sequence. After the brain was extracted through the nostrils, embalmers made an incision on the left side of the abdomen and removed the stomach, intestines, liver, and lungs. These organs were preserved separately, typically in canopic jars, because they were still considered necessary in the afterlife. But none of them carried the spiritual weight of the heart.
The heart was the one organ embalmers were instructed to leave untouched inside the chest cavity. Keeping it intact within the mummy was essential for ensuring eternal life. If the heart was accidentally damaged or removed during the process, a heart scarab amulet could serve as a substitute, but the goal was always preservation in place.
The Weighing of the Heart Ceremony
The reason the heart mattered so much comes down to one critical moment in the Egyptian afterlife: the judgment scene. After death, the deceased traveled to the Hall of Two Truths, where the heart was weighed on a scale against the feather of Ma’at, the goddess of truth and justice. The god Thoth, depicted either as a baboon or an ibis-headed man, recorded the outcome.
If the heart balanced with the feather, it meant the person had lived a righteous life. They were admitted into the afterlife. If the heart was heavier, weighed down by wrongdoing, the soul was condemned to destruction. No heart meant no judgment, and no judgment meant no afterlife. This is why preservation was non-negotiable.
The ceremony appears throughout copies of the Book of the Dead, often in beautifully illustrated scenes showing the scales, the gods, and the fields and rivers of the netherworld that awaited those who passed.
Heart Scarabs as Insurance
The Egyptians were pragmatic about the risks of this judgment. They worried that their own heart might betray them on the scale, so they developed a specific countermeasure: the heart scarab. These amulets were placed on or near the heart of the mummy, and their flat undersides were inscribed with spells from the Book of the Dead, most commonly Chapter 30B (or the less common Chapter 30A).
These spells were essentially a plea from the deceased to their own heart, asking it not to testify against them during the weighing. One surviving example, a heart scarab belonging to a woman named Hatnefer (now in the Metropolitan Museum of Art), bears an inscription in which she directly addresses her heart, urging it not to bear witness against her. The scarabs were enormously popular, reflecting just how deeply the Egyptians feared a negative outcome at the scales.
What CT Scans of Mummies Reveal
Modern imaging technology has confirmed how seriously embalmers took this practice. A 2024 study used CT scans to examine 45 Egyptian mummies from museums in Berlin and Turin, looking specifically for preserved heart tissue. Researchers identified recognizable heart structures in 28 of the 45 mummies, a rate of 62%. They could distinguish specific anatomical features including the pericardium (the sac surrounding the heart), the chambers, valves, and even the heart muscle itself.
Of the 45 mummies, 33 showed clear signs of evisceration, meaning the abdominal organs had been removed through the traditional incision. Yet hearts remained present in a majority of cases, confirming that embalmers were selectively removing organs while intentionally preserving the heart. The cases where hearts were absent likely reflect damage over thousands of years, variations in embalming quality, or occasional deviations from standard practice rather than a deliberate choice to remove them.
Why the Brain Was Discarded
The contrast between the heart and brain highlights how differently the Egyptians understood the body compared to modern medicine. From the Egyptian Book of the Dead through the later writings of the Greek philosopher Aristotle, many ancient cultures placed consciousness in the heart rather than the brain. The Egyptians were convinced the heart was the source of individual intellect, character, and memory, and most importantly, the key to navigating the afterlife successfully.
This belief shaped every step of mummification. The brain was pulled out and thrown away. The heart was carefully preserved, protected with amulets, and inscribed with spells. For the Egyptians, leaving the heart inside the body wasn’t just a ritual preference. It was the difference between eternal life and oblivion.