If someone is diagnosed with type 2 diabetes and from then on they take perfect care of themselves???

will the length of their life still be shorter than it would have been just because they have diabetes, even if it's being managed wonderfully?

Any damage caused prior to being diagnosed is irreversible. However, perfectly controlled diabetes prevents future damage, and helps ensure a long, healthy life, as long as the control is kept up. Diabetes doesn't kill, but the complications from high or low blood sugars resulting from diabetes do, so controlling the blood sugar is the best way to ensure a long and healthy life!

Type II diabetes is called diabetes mellitus. It is an adult on-set type. The reasons a person get's this type of diabetes varies. Sometime's depending on why a person get's it say being over weight, sometimes if they eat properly and loose the weight, the diabetes goes away. Although, most persons with type II keep it for life, with proper diet and checking and excercise a person can live as long a productive life as someone without it. Not all type II diabetics have to take insulin, but must follow their doctor's instruction and use common sense when eating etc. My cousin is in his 80's and has had diabetes for over 40 years. Good luck it can be managed.

Type 2 diabetes or Diabetes Mellitus is commonly known as age related diabetes. People having this type of diabetes can lead a very normal life with a few precautions. You need to take 'healthy and balanced' food but very less amount of sugar. You are not supposed to starve yourself (as many people do). Regular exercise is a must. It need not be a heavy or gim-going type, but simple free hand exercises, a brisk walk in the morning or a Yoga session would be extremely helpful. Smoking and alchohol are strictly prohibited. Continue to do your normal routine works.
The trick is to keep your blood sugar level under control by doing the above things. You can live longer than people usually think after getting type 2 diabetes.

You have not mentioned your age. However, I would suggest you to go for a thorough eye check up as longer duration of diabetes can cause permanent damage to your vision.

All the best.

Usually, simply because diabetics are missing a very important regulatory function when their insulin is insufficient or poorly used. It's impossible to "take perfect care of ourselves"...we just do the best we can to mimic the body's natural insulin response, and keeping our BG's in range and our A1C's as low as possible gives us the best chance possible of leading a full and long life.

I have been a diabetic type 1 for over 40 years I don't know of a person that has "managed perfectly" ever! I know some that work hard at it even Damn hard at it but noones perfect and most of us just try the best we can.
But to answer your question, we need more answers.... How soon was she/he dx'ed and at what age?
the problems can go away if cared for like nerve damage but loss of eyesight or kidney failure or heart damage is abit harder and will continue to go bad. Like I say Im a diabetic type 1 I have it all, losted my eyesight, and on dialysis for 3 years now but I still have all my legs and fingers! I have heart failure and Im only 49!...... I wonder all the time if I will make it to the big 50!
If you have type 2 (or even 2 for that matter) then the damage has "set" in. You have to do your best but also can't beat up yourself for a piece of cake or a baked potatoe! live and let live, love your family and friends, and make peace with your God.
Good Luck.

My mother was diagnosed with type 2 diabetes and I've been doing much research.

If it's caught early, it can be treated very well.

If it's caught later, you could've suffered from major complications like Kidney damage.

Consult your doctor to run diagnostic tests before you go on any medication.

As long as you keep your diabetes under controll you have a better chance of avoiding complications, but there are no guarantees. Just do your best and pray.