Wild rice can make you sick which is very rare, as you must have read above if you find grains in wild rice which are purplish in colour and may contain toxins and heavy metals, it is said to make you sick and you may feel dizzy, nauseous, diarrhea, headache and vomiting. It is recommended to remove any grains found in Wild rice and to soak it for 24 hours before cooking the wild rice. It does not cause any major health issues.