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It’s been one month since YouTube star Caleb Logan passed away at the age of 13, and new details about the beloved web personality’s death are still emerging.

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Caleb and his family, who are known as the Bratayleys online, have cultivated a large following thanks to their DIY reality webseries, but they’ve attracted more attention than ever in the weeks since Caleb’s passing.

Caleb Logan’s final video – filmed just days before his death – has now been viewed over 6 million times.

Much of the interest, of course, centers around curiosity as to what could have caused a seemingly healthy adolescent to pass away so tragically young.

The family has issued several statements Caleb’s cause of death. They initially claimed that he died of "natural causes," but later clarified that he had been suffering from an untreated and undiagnosed condition:

"Caleb’s death has raised many questions about how and why this could happen to a seemingly healthy boy," Logan’s loved ones wrote on Instagram.

"Sadly, tests have confirmed today that Caleb passed away from an undetected medical condition.

The family promised "more definitive answers" in the weeks to come, and today, a medical report revealed that Caleb had been suffering from a condition known as hypertrophic cardiomyopathy.

Doctors say the condition almost always goes undetected, and is entirely untreatable.

Medical experts tell TMZ that even if Caleb’s family had been made aware of his condition, there is likely nothing they could have done to prevent his passing.