As mentioned above proper hand washing done frequently will help cut down on possible contact with germs. Another thing that is hard for people to do sometimes is to stay home and get healthy when you are sick. One of the major causes of winter colds and flu is contact with others who are infected.
Proper nutrition and hydration are always good rules of thumb. Good nutrition keeps up your immune system. The winter air is dryer anyway so keeping your body and your skin properly hydrated will be helpful. Keep your hands washed thoroughly and frequently to counteract the germs that seem more prevalent during the winter months.
There are some specific things to watch for and do during the winter months as far as your health is concerned. People tend to spend much more time indoors, which can lead to some health issues.
They tend to exercise less and eat more, which adds weight and loses muscle. Regular exercise has been clinically proven to ward off illness, especially colds and flu.
The air inside a winter home is often the most polluted it will get during the year, because the doors and windows are never open. Change your furnace filter more regularly during the winter, to keep smog and smoke particulates at a minimal level inside your home.
Winter health care in general is not all that different from health care in other times of the year.
The thing that is probably most unique to winter is Seasonal Affective Disorder. This is when people get depressed because of the days being short (which means less sunlight). This is something that only happens in winter and may need to be treated medically (drugs, psychotherapy, light therapy).
Our body needs water during winter, too. In this way, the toxins are removed from our body and our skin is kept moisturized from inside.
Also, to moisturize the skin from outside, it is a must during winter, when our skin tends to dry and to crack. It would be better if we'll apply mineral oil or petroleum jelly instead of skin care product that contain chemicals.
There are certains foods that help us to feel warm during winter: clear chicken soup and oatmeals. Also, not to forget to dress proper (gloves, socks, wool cardigans and hats), avoiding to become ill.