Dear Sir, Thanks for your question. I truly understand your concern for your health.
Now coming to the question, since you have not mentioned your height i am not able to calculate your exact BMI but considering your weight and age i can assume that you are fitting into morbidly
obese group. One more thing, BP of 140/104 can put you in pre-hypertensive state. You have also not mentioned about any
high blood pressure history in your family, so i presue me that it is not there. You don't need to panic for your blood pressure but definitely yes for overall health and BMI.
I would suggest your following advise
1. Reduce overall salt intake especially avoid table salt
2. Avoid high fat diet
3. Do regular walking or cardio exercises daily start with 30 minutes and gradually increase
4. Take high fiber diet and avoid soft drinks
Again reconsult your physician and recheck your blood pressure after 3 months. Wish you good healthy life ahead.