You are in the mahadasha of Venus , which is the 12th house lord and sub period of Mercury. Both Venus and Mercury are inimical in your horoscope. Venus being the 12th lord, increase in expenses on medicines are strongly indicated. The period till November 2018 you will need frequent medicines. Doing the remedies of Venus will bring you much needed respite from malefic Venus and improve your health.
1. Avoid too much of Sugar and sugar related products
2. Check on your weight and avoid high cholesterol diet