K.RebbaaA.Culp-HillR.D'AlessandroA.et al (2019)
Symptoms of histamine intolerance vary from person to person, but some common symptoms associated with low DAO levels include: Skin symptoms: itching, hives, redness, eczema, or flushing Gastrointestinal symptoms: bloating, abdominal pain, diarrhea, gas, or nausea Respiratory symptoms: nasal congestion, sneezing, runny nose, or difficulty breathing Cardiovascular symptoms: irregular heartbeat, palpitations, or low blood pressure Neurological symptoms: headaches, migraines, dizziness, or fatigue Psychological symptoms: anxiety, irritability, or insomnia It's important to note that these symptoms can be caused by various factors and not just histamine intolerance or low DAO levels
Archives of General Psychiatry
However, because it works by growing new blood vessels ( angiogenesis ), scientists are still studying to make sure it doesn't grow them in places where we don't want them
doi: 10.3945/ajcn.2010.28674F [PubMed] [Elsevier] Cory, H., Passarelli, S., Szeto, J., Tamez, M., & Mattei, J