5. Spark Severe Allergies
Moving to the demerits of pecan nuts, the most important one is that it triggers allergy-like most nuts. But pecans have been found to increase the allergies over time as you keep eating them. So there can be a possibility to have acute skin irritation from one exposure that you might not even accredit to the nuts, and then when you eat more of it, have an even more serious reaction.
Pecan allergy symptoms that you need to look out for include shortness of breath, wheezing, coughing, swelling, itching, hives, diarrhea, vomiting, and nausea. A person who is severely allergic to pecan nuts will be at risk just by touching them or breathing in pecan dust.