Hi. Enzymes are an essential part of life as they speed up chemical reactions within the body and also help to protect from disease etc.

In my opinion you will not need to supplement enzymes because it is very easy to get them from food. The best foods to eat is raw fruits and vegetables. Raw because the heat used during cooking tends to kill the enzymes, but if you must cook them, slow cook them on low heats to get most benefit.

There are 4 different types of enzymes, food enzymes, metabolic enzymes, digestive enzymes, and antioxidant enzymes. All are great for the body and all can be easily taken from raw fruits and vegetables as well as other foods (but these are the best sources).

Concho

www.Concho.Org.Uk
www.Nutrtion-forum.Co.Uk

While it is true that enzymes are essential to food digestion and also true that enzyme production reduces with age, I believe eating enzyme tablets is not a good idea.
Like the others suggest, I would re-inforce more raw foods to be eaten. Fresh fruits and vegetables is the key. Don't let a day go by where you only eat processed/cooked food. You will improve your quality of life with raw foods.
But also, I wouldnt go out and only eat raw foods as some suggest. A balance of raw and cooked is important.

First, why do you feel you need an enzyme supplement?