My BP Is 155/78 ,is That Normal For An 18 Years Old ?

My blood pressure is 155/78 , is that normal for an 18 year old ? Background: I turned 18 on the 24th, I m active i.e. i jog 2 miles a day 2-4 times a week, if i don t jog i cycle 10 km on an exercise bike.I also do weights. I don t drink/smoke. I am not on supplements/drugs etc. Height: 175.25 cm, Weight: 73KG. My bmi is 23.6 (overestimated for athlete weight trainers, however as it is i m in the ideal weight section) Could there be any link to the the following ? : http://uk.answers.yahoo.com/question/index;_ylt=Ai4.D4XNTVWWEHgS.nqsjiohBgx.;_ylv=3?qid=20080607131443AAowH4u is my bp normal ? reason why i m asking is because i went to the doctor s 2day and the nurse who took my blood pressure hinted on the fact that my top figure (155) was pretty high for my age. In terms of my diet , i try to stay away from fatty foods but i do add salt to almost every warm meal i have. so jakes_guurrl i think that might be it thx