According to a new study published in the journal Neurology, weight loss surgery may be a major risk factor for a specific type of a headache. The researchers of the study evaluated 338 patients all with a history of spontaneous intracranial hypotension. These headaches are typically caused by a cerebrospinal fluid leak. The study found that 11 of those patients had some type of weight loss surgery. Though 11 people or 3.3% of the sample is a small number, it was significant enough for the study’s researchers to warn medical professional of the possible relationship.