Making the transition to a whole-food, plant-based diet, involves a process known as detoxification. It is not unusual for a person to experience feeling ill shortly after beginning their healhier lifestyle. Some of the most common symptoms are fatigue, headache, shakiness, and GI symptoms of gas, bloating, and diarrhea.
It has been noted that some symptoms can even mimic those of the flu including an elevated temperature. Generally speaking, the severity of the symptoms is directly proportional to how toxic a person is and the richness of their previous diet. Some choose to make positive changes in their diet quickly which may intensify the symptoms. Making changes more gradually may work better for those who need a slower adjustment period.