Why am I always tired? 22 medical reasons for feeling tired

Food intolerance

Many people have an intolerance to certain types of food. How many more people these days are discovering that they can’t eat or drink dairy products for example?If you have an intolerance to certain foods, the result of eating them can be excessive tiredness afterwards. You can ask a doctor to help you identify which you may need to to cut out of your diet.You could also experiment to work out what food types are causing you to feel tired after eating them. Try cutting out specific food types a few days at a time and see if you notice the difference.As long as you keep a sensible and balanced diet while doing this, there should be no harm in experimenting.