Hyperphagia and Obesity
The physical and emotional burden of hyperphagia and obesity
Acquired HO carries significant, long-term burden for people living with hypothalamic injury1,2
Accelerated, sustained weight gain and hyperphagia are two key symptoms that distinguish acquired hypothalamic obesity (HO) from more general forms of obesity.3–6

Acquired HO can result in:
Physical burden2,7
Significant burden on patients’ and caregivers' day-to-day lives:
- Hyperphagia
- Chronic fatigue
- Decreased physical activity
- Weight gain, even in the absence of increased caloric intake
Emotional burden2,7
Distressing emotional and social challenges for patients:
- Frustration due to difficulty losing weight
- Poor body image perceptions
- Fewer positive social interactions
- Negative impact on mental health
Burden of hyperphagia
Hyperphagia is a chronic pathological condition characterized by insatiable hunger, impaired satiety, and persistent abnormal food-seeking behaviors. It is differentiated from other hunger associated with overeating by its severity and persistence.8
Hyperphagia contributes significantly to patient and caregiver burden in acquired HO2,9
Mean Burden Scores (ZBI) Reported by Caregivers of Craniopharyngioma Patients7,*
30.3
For Caregivers of Patients without hyperphagia (SD: 16.7, n=38)
41.1
For Caregivers of Patients with hyperphagia (SD: 12.8, n=44)
For reference, ZBI scores of
23.7 for cancer caregivers and 36.8 for Alzheimer's disease
caregivers have been reported10
23.7
36.8
ZBI score
*Based on 82 self-identified caregivers of hypothalamic-pituitary brain tumor survivors responding in an online survey to the Zarit Burden Interview (ZBI), which assesses the perceived burden experienced by caregivers of individuals with chronic illnesses or disabilities; a higher score indicates a greater level of caregiver burden.7
Around 70% of patients with acquired HO experience hyperphagia, though the presentation of symptoms and behaviors can vary in severity.7,11

“Food ruled my life and still does to a certain degree…it’s a lot of grief and struggle in my everyday life.”
– Individual living with acquired HO
Downloadable
Identify hyperphagia in your patients with an injury to the hypothalamus.
Burden of obesity
Acquired HO is a major risk factor for related morbidity and mortality1,12
Long-term Effects of Obesity-related Sequelae in Craniopharyngioma Survivors13-15
Metabolic dysfunction-associated fatty liver disease
Sleep apnea
Dyslipidemia
Hypertension
Glycemic disturbance
Cardiovascular disease