A 7-year-old Michigan boy who weighed 255 pounds died after authorities say his parents failed to provide adequate medical care while seeking veterinary treatment for their dog on the same morning he collapsed, prosecutors announced.
Background
Casper Jacob Shane O'Brien was pronounced dead at a hospital on Nov. 4, 2025, after Flint Township Police Department officers responded to a report of a child in distress at the family's home in Genesee County, Michigan. Investigators determined that at just over 4 feet tall, Casper weighed approximately 255 pounds—far exceeding the Centers for Disease Control and Prevention's healthy weight range of 50 to 73 pounds for a child his age, height, and sex.
Dilated cardiomyopathy was identified as the cause of death by medical examiners. According to the Mayo Clinic, this condition involves the thinning and stretching of heart chambers, causing them to grow larger, and can be triggered or exacerbated by obesity.
Genesee County Prosecutor David Leyton described the case as one of alleged extreme neglect, noting that Casper had been taken to a doctor only once in his seven years of life. The boy had no pediatrician on record. Meanwhile, authorities learned that Damien O'Brien maintained steady employment with health insurance coverage available through his job.
"On the face of it, this is cruel and extreme suffering from this child caused by the neglect of the parents," Leyton told WJRT-TV. "That's obesity, and then you also have the fact that this child did not have a pediatrician."
Child Protective Services had never conducted a home visit for the family, according to prosecutors. The couple also has a 5-year-old daughter who remains in the household's care under protective services supervision.
The Charges
Damien O'Brien, 40, and Jessica O'Brien, 41, were each charged with second-degree murder, prosecutors confirmed. Both defendants are being held at the Genesee County Jail without bond following their initial appearance.
Leyton said investigators discovered that on the morning of Nov. 4—the day Casper died—his parents called a veterinarian to schedule treatment for the family dog rather than seeking emergency medical attention for their son.
"None of these kids even existed in the eyes of the government," Leyton said, emphasizing that no official records documented either child in state systems prior to this investigation.
Key Takeaways
- Casper Jacob Shane O'Brien died Nov. 4, 2025, at age 7, weighing approximately 255 pounds at just over 4 feet tall
- The CDC recommends a healthy weight range of 50 to 73 pounds for children his age, height, and sex
- Medical examiners ruled dilated cardiomyopathy—the cause linked to obesity—as the manner of death
- Parents Damien O'Brien and Jessica O'Brien face second-degree murder charges; both are held without bond
- Prosecutors allege Casper had seen a doctor only once in seven years despite health insurance availability
- Child Protective Services had never previously visited or documented the family
What's Next
Both defendants are scheduled to appear in Genesee County Circuit Court on July 2 for further proceedings. The case remains under investigation by the Flint Township Police Department with prosecution by the Genesee County Prosecutor's Office.
Casper's obituary described him as "a bright, loving young boy whose joyful spirit touched everyone around him."
A preliminary exam or evidentiary hearing has not yet been scheduled as of this report.