A simple selfie could hold hidden clues to one’s biological age — and even how long they’ll live.

That’s according to researchers from Mass General Brigham, who developed a deep-learning algorithm called FaceAge.

Using a photo of someone’s face, the artificial intelligence tool generates predictions of the subject’s biological age, which is the rate at which they are aging as opposed to their chronological age. FaceAge also predicts survival outcomes for people with cancer, according to a press release from MGB.

The AI tool was trained on 58,851 photos of "presumed healthy individuals from public datasets," the release stated.

To test the tool’s accuracy, the researchers used it to analyze photos of 6,196 cancer patients taken before radiotherapy treatment.

Among the people with cancer, the tool generated a higher biological age that was about five years higher than their chronological age.

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