I think, if dermentia did not run in your family trees, and most of your uncles/aunties lived a long riped life, then you should be pretty safe.
That being said, while nobody can be certain of what might happen during old age, there is still hope of preventative measures you can fully control. Eat light meal, white meats, good proteins and more fiber rich foods. Cut down sugar (which is highly inflammatory) and do regular exercises like long distance walk. Consume multivitamin supplements to fill any gap of nutrients shortage in old age. In general, Omega 3 fatty acid and multivit supplements are not very expensive. They are your fundamental body housekeepers to keep you stable against lurking diseases. Go for well known brand.
Lifestyle wise, your priority is to keep stress, pressure, anxiety level as low as possible. This include what you see, hear and speak. Stay away from polictics, crowded, messy, noisy and filthy places and self bragging people. Stop quarrelling with others and stop hearing other people quarrels and gossips. Toxics people and places, in the past when you were working, should have passed, that you are now getting old.
Don't stop reading, writing and doing creative stuff, and speaks constructively only when necessary, it helps to maintain a healthy and analytical brain function. Long hours sleep also purge out dead cells in your brain. Most importantly, make sure your tummy is flat, which means you are burning off all the excess fats and glucose which the body does not need.
Stop feeling sorry, anxious and frustrated for other parts of the world. Every country will still be dealing with their same political problems, quarrels and wars, even long after you passes on. Singapore is no difference.
I hope you find the above enlightening and helpful and then your body will reward you kindly in return.
One final thoughts, the internet is flushed with endless health informations. Some of them, please take it with a pinch of salt.
