26 yr old with bmi of 15.93. what danger signs should i look out for? already had pains in my heart. is a bmi of 15.93 same as 15.9?

Too Many Assumptions: Thin people typically much lower incidence artery disease. Chest discomfort: does not mean heart pain, many other reasons. Granted artery ds typically begins in childhood, but also asymptomatic for decades because arteries enlarge, not narrow. Bmi, a simple ht/wt formula, used for large group statistics but usually low value/accuracy for the many more important issues in any single individual.