a man from the Britain
There are a number of ways in which a person could be supportive. This person could be physically or emotionally supportive.
It could be, depends on the person...
An aging person can try to stay healthy by being active. This doesn't mean that one has to run or walk 3 miles daily, but a nice stroll around the block is good. Other ways for an aging person to stay healthy is to stay physically and mentally busy. One could try volunteering as something physical. Playing word games or word puzzles is a way to stay mentally sharp.
A person could get ideas for healthy diet menus from different sources ranging from internet to person. One of the sources can be found by searching "Cooking for One" on Google.
yes
Yes they can physically be healthy but they could be lonely. Is it a conscious choice to have no friends? You should go out and meet people. Even if you don't want to talk to them just be around them and see what they are like. They are probably happier and carefree because they can share their worries with other people, that's what friends are for.
yes
Whether a person can run fast depends on more than just their weight. A person who is large, healthy and fit could probably run faster than a skinny person who is not healthy or physically fit.
Could be a person who enjoys food, a healthy eater. Also, a person who sponges on others as a parasite
I could be for one person and not for another.
It depends on which aspect of a person's health they specialise in... It could be a dietician, a physiotherapist or psychiatrist.
yes. stress could physically and emotionally change a person. it can cause the person to gain weight, weaken their immune system, grey hairs, etc. and it can cause a person to become angry or unpatient, etc.