Essay on a health problem and How I overcame it.

During my senior year I was diagnosed with hypertension with blood pressure as high as 180 over 120. Also my grades in senior year were not as impressive as they were supposed to due to same problem. I have requested my teachers and counselors to include that in their recommendations. Also I am submitting a recommendation from my doctor.

My question is should I write an essay on how I improved my health with a lot of changes in my lifestyle.

Also I would like to point out that I took a gap year after my senior year.
My SAT scores are (1870/2400) in Jan 2016, (1480/1600) in Oct 2016, Physics 800 and Maths L2 770.
My GPA was constantly improving till the senior year. I took a Gap Year for improving my health