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Message: <blockquote data-quote="rhubarb73" data-source="post: 1963459" data-attributes="member: 478319">If your BG's are high then your body will try all sorts of ways to get rid of it. Which means you might wee a lot, or sweat more or create more saliva.  All of which is using up water in the body, which can leave you dehydrated. That can cause headaches.There may be another cause, but it will do you no harm to keep yourself really well hydrated as this will help with both the BG and headaches.  Something else that can push up BG and cause headaches is illness - are you coming down with something, a virus or infection.  Again staying well hydrated is going to help.If you get one reading that is a bit high, it is sometimes worth testing again straight away as all equipment is variable.If you are at all concerned then seek medical advice - there may be other causes.  Water though.  Definitely drink water.</blockquote>

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