Doubling over with abdominal pain or running for the bathroom after every meal can be painful, annoying and embarrassing. Food intolerance can be less severe than food allergies, but it too can be inconvenient and troublesome. It's important to know what the symptoms of food intolerance are in order to stop them in their tracks. 

The differences between food allergies and food intolerances aren't exactly black and white . The symptoms may be similar but tend to occur at different times and levels of intensity. A food allergy is an autoimmune response, whereas food intolerance is a digestive system problem. 

Symptoms of food intolerance include: 

• nausea;
• stomach pain;
• gas;
• cramps;
• bloating;
• vomiting;
• diarrhea; and
• headaches. 
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