Weight loss only by diet/calories control?

No I dont know anyone whose ever lost that much without exercise, unless they have had gastric bypass.

Not 70-80, but I lost about 40 pounds before I started exercising.

I lost 162 lbs through Weight Watchers. No exercise besides walking to class because I was a college student. Had so many classes, I could never make it to the gym. Its possible, but in my experience you will have more extra skin than if you worked out. Exercise (especially weights) really helps with toning. I have gained 40 lbs back since I have been married (3 1/2 years) so I am back to lose that 40. It is possible, but I like working out now along with calorie control

Has anybody lost over 70-80 lbs just by controlling the diet and without doing exercise or jogging? I am curious to know that people who are losing lots of weight is it always a combination of diet and exercise or we can lose 80 lbs by being consistent and honest with the calories control only. Please share your experiences.

You can do that, and actually makes the math easier to deal with compared to adding exercise. But if you create too big a deficit, you'll burn up some muscle mass too - and you'll probably want that.
Just walk 15 min almost every day, and select Lightly Active as activity level, and select 1.5 lbs weekly so it's not such an extreme deficit.

You'll likely lose more than that once you get going.

You'll probably change mind and perhaps safer and more realistic for exercise later on.

Diet is for fat loss.
Exercise is for body improvement and heart health. It can both help and hinder fat loss depending on how you do it.

In agreement with Shaydon. I lost 30lbs and personally could hardly tell. One month of exercise and not much lb loss ALOT of inch loss and general shaping and toning. Conclusion, exercise provides far superior aesthetic results if you ignore the numbers on the scale.

Bottom line: You can lose weight on calorie restriction alone but then you will be skinny fat. You will appear skinny but you will not be healthy.

Cardio and strength training are both important for overall wellness, and isn't that what we're going for?

Yes. I lost the first 75 lbs by doing nothing but my day-to-day activities. I then picked up exercise and loss has slowed considerably. So on that I would have to recommend don't pick up the exercise until after you lose the weight. That is just my experience I'm sure others differ but if I had to do it again I would do that. Too late for me now as I am in an gym contract so would be a waste of money if I didn't go.

Weight loss is all about calorie deficit. Exercise has absolutely nothing to do with it.

Exercise = fitness

Diet = weight loss

Two different concepts that are completely mutually exclusive. You can lose weight without changing your fitness level, and you can change your fitness level without losing weight.

Couldn't you argue that exercise could be considered part of the calories in calories out equation as a means of calories out? I'm not suggesting that it needs to be. I wouldn't argue that you can't lose weight without exercising. It just seemed weird to see someone saying that weight loss is about calorie deficit and exercise has nothing to do with creating a calorie deficit when it certainly can--even if it doesn't have to. Perhaps it was just a phrasing issue for me.