As we get older, our bodies detoriate, the food we eat is treated with vitamins and all other kinds of things, what about the feed we feed our main course with (meat), what about the chicken etc. Yes, our grounds is a source of pollution. Things happen, because we do not take care of our earth and what lives on it. We are society, that demand perfection, but we are not, nor is our foods. As we age, we get diseases, some has been passed on by generation, some by our lifestyle others is allergies. Others we don't know where it comes from.
Where I live, I have a fellow that has been battling with bones diseases and now battling emotional problems, another is battling cancer, another it's his heart. One lady who lives in front of me, now battling depression, I had that last year, is it a coincidence or is it, that are lives are sometimes perturbed by too much living the good life.
Look at the source of your family, look at the way you eat, do you take vitimins, do you live in a hot or cold humid zone, do you have money, do you worry about how you are going to pay your bills at the end of the month, do you have source of conflicts.
B-12, I have that problems, it's an easy fix, get a vit b-12 shot once or twice a month and things get better, but sure it brings more problems. does your Thyroid work well, do doctors think that you have a problem, or are they searching based on the latest research video they were forced to watch by the pharmaceutical companies.
I think there are too many if, my mother for instance is 88 will be 89 in January, she has a very good lifestyle, has been living alone for years, she said the best thing that ever happened to her, was leaving my father and raising her kids alone, sure it was tough, but like she said, I never got to be sick, cause I had too many things to do and so I never allowed myself to be sick, she was always positive. She say's for your own good you have to stay away from doctors and their drugs they give like chewing gum.
You don't need much money to live, but you have to live a happy life, get rid of your debts, get rid of what bothers you and live life like it was your last time you were going to be on this earth. Smell the flowers and forget about what other ails them, forget one day that you have to take all these freeking pills and just go out and smell the sunshine. It doesn't take money, just your sense to go outside and to soemthing wonderful for yourself and for someone else.
Climate, food, blood relatives etc, going to the doctor and stress will make you sick, go out an enjoy life, try something different. And stop worrying about others, and worry not.