My doctor had the test done a few years ago because I broke two bones in a car accident. The reason for the one this time is because I am a smoker and small framed and it is routine for some one my size. I am not saying that low carb is bad for everyone but for some like me it is. I'm not blaming low carb for all my health problems but it is very strange I never had problems before. When I was on the diet is when my problems started I had fainting spells , high blood pressure, heart palps, and weakness. Never had high bp before as a matter of fact my bp was normally 110/60 before I started than while I was on it my bp was 190/100. Than a week after I stopped lc my bp was 110/60. I just want people to know that lc can be dangerous for some people not all but some.