I hear a lot that people don't like to mix together fish and dairy products such as yogurt as it can be poisoning and can lead to some allergies!
But Is that true?? 
Maybe it's not tasty to mix it together, but if that was harmful, more than half the population would be dead! right??
Actually that combination doesn't cause food poisoning but it can only lead to some digestive problems.
In other words, some foods, if mixed improperly in the digestive system, will cause distress!
- A seafood combination is fine if no other food groups are eaten at the same time, apart from salads. Any fish meal is ideal with salads or cooked vegetables.
- Yogurt is best eaten alone or with a simple addition of apple, apricot or peach.
What's the concept?? Eat fish and yogurt at separate meals. Why??
Protein foods require a highly acidic environment for digestion while carbohydrates and fats require a more alkaline medium!!
So fish and yogurt need 2 different environments for digestion, and so produce a medium where both foods won’t be well digested and that what causes all sorts of digestive stress, including gas, heartburn, cramps, bloating, constipation, and so on...
Keep the meals simple and you will be assured of better digestion.
So tell me what do you think about that?
And.. Is there any harmful food combination in mind??? 
Wow! I was always told my elders not to eat fish and yoghurt together. You have provided the best answer. Thanks a lot!
Thanks shazia! long time!! hope all is going great