I often get questions about “how” part. Here is the short list of things you can do to prevent sicknesses. Have faith in your sanatana roots first then read it.
How to be proactively preventive and avoid being victim of healthcare industry (Diabetes, Heart, Cancer etc)?
1) Wakeup at 4 or latest by 5
2) Meditate on your कुलदेवता
3) Brisk Walk before dawn
4) सूर्य नमस्कार at Sunrise
5) 30 minutes, morning or evening, on playground, playing team sport.
6) No internet, gadgets in bedroom 1hr before sleep
7) Read new book every day
8) TV, microwave and refrigerator in dustbin or as home museum artifacts
9) Eat fresh food. Cook as per necessity. Once cooked, use it in next 4 hours or make compost fertilizer out of it.
10) Socialize out of social media. Meet friends weekly.
11) Relax.
12) Fast on Ekadashi
13) Connect with organic farms and visit them often. Work as labor at farms
14) Before you sleep, cheer up yourself and family for one more wonderful day!
15) Prefer community kitchen to celebrate over restaurants
Small humble list I try to follow in my life. 
