Based on the Rambam the only three things you need to be healthy 1. Be calm (distress – anger is a poison- it elevates blood pressure and minimizes the immune system!) 2 excerisize (just as if you don’t tune up your car…. – when we use our muscles sickly cells die and healthy ones are born]) 3. Don’t overeat ]- and if I can add, don’t eat sugar (as much of possible any refined food – and make sure you have a good intake of fiber