How to Manage Diabetis at the Age of 45 Years?

First of all, you need to manage a proper diet.

Foods to avoid:
- To improve insulin function one must cut down all artificial foods like fizzy drinks, packed/canned foods, diet chocolates etc.
- Maida in form of white-bread, nan, pizza, burger etc should be avoided.
- All sugary products, juices and very sweet fruits like chikoo (sapota) should be avoided.
- Corn flour, white rice, fried potatoes, too much of dairy and eggs should be avoided.

Food to Eat:
- Use a judicious mix of poly-unsaturated oils like safflower/corn and mono-unsaturated oils like olive oil/rice bran oil while cooking.
- A lot of herbs help to improve the insulin response like karela (bitter melon) (karela juice can be consumed as it has plant insulin), methi seed sprouts, neem, jamun fruit etc. All these are also available as a dried powder which can be taken twice a day.
- Garlic is like a boon for diabetics. Besides being useful in decreasing cholesterol it also lowers blood sugar. It is also rich in potassium so it replaces the potassium lost in the urine of diabetics. It also has zinc, sulphur and manganese which is also beneficial in diabetics.
- A high fiber diet is the cornerstone of treatment of most diseases and specially insulin related disorders.

More points here: http://www.lifemojo.com/lifestyle/diet-tips-for-diabetes-118850

Also, you need to do regular exercise: http://www.lifemojo.com/lifestyle/tips-for-exercise-in-diabetes-1422244