What are the major side effects of eating chia seeds?

Could you elaborate on the potential adverse reactions one might encounter after consuming chia seeds? Are there specific health concerns that one should be aware of? For instance, are there known allergies to chia seeds? Do they tend to cause digestive discomfort such as bloating or diarrhea? Furthermore, do chia seeds interact adversely with certain medications or supplements? Lastly, are there any long-term health implications of regularly consuming chia seeds that consumers should be mindful of? I'm particularly interested in understanding the lesser-known side effects and potential risks associated with this popular superfood.