Some marijuana users in Colorado are experiencing a mysterious illness.
And while it hasn't reached California It could eventually make its way here.
Recreational use of the drug has been legal in Colorado for three years.
And its use for medical purposes has been allowed for even longer.
But one emergency room doctor says he's seeing an increase of patients with specific cannabis-related symptoms such as recurring nausea, vomiting, and abdominal cramps.
He believes it occurs among those who consume large amounts of the drug.
Doctors say moderation is key when it comes to marijuana use.
Dispensary owners agree and say if taken correctly marijuana can help relieve medical conditions such as seizures and pain management.
Under state law marijuana use is legal and regulated in 28 states including California.
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