What am I doing wrong? Any suggestions?

Plateaus are normal. It doesn't mean you have to change anything, just got to give your body some time to catch up. Typically it's not a plateau unless you stall for 6 weeks or something.

What I suggest though is making sure that you weigh all your food properly (measuring cups don't cut it) and don't overestimate your exercise calories. Do you use a heart rate monitor? I see you're logging 600 calorie burns, it seems a lot of calories for 30 minutes of intense cardio (weight training doesn't really burn much).

I agree with the above. Be very accurate in your measurements of food and exercise. Also, check your sodium intake - it is VERY high some days. Recommendations are 1500 mg and below - I know MFP sets you at 2500, but from the research I've done 1500 mg is recommended in most places. Lower amounts of processed foods and more whole, fresh foods will help with that. Be sure you are getting in 2 liters plus of water daily to help with balancing sodium intake. Also shoot for 25-30 grams of fiber per day. Stick with any changes you make for at least one month. Measure your losses over weeks and months, not days because weight fluctuations happen. Don't let yourself get discouraged.

Keep going because one day you'll see a change. I've been stuck for months - then one day, I'll see a small drop in the scale. I've been here since Feb. 2012 and I've lost 45 pounds. Doesn't seem like much but it's 45 pounds gone and not gained and I'm keeping it off. Slow and steady wins the race.

Good luck!

Eat at a reasonable calorie deficit from your TDEE. Weigh and measure everything that goes in your mouth. Log everything and don't overestimate your exercise calories. Eat the foods you want to, just do no over eat. Weigh once a week or so.

Do this every day for about 6 weeks and then re-evaluate.

^ Great advice! It's easy to slip in more calories than you think. I've had some weeks were I lost 0 lbs and then the following week I'd lose 2 lbs without changing much at all. It doesn't seem that weight loss is linear, so I wouldn't get too discouraged just yet.

If you've only been here 70 days, you've never really plateaued. A plateau is a lot longer that no losing for a few days or a week. I'd say stop trying all these different eating "styles" and stick to the basics. Calorie deficit and accurate measuring. My guess is the issue lies with inaccurate intake measuring, inaccurate burns or both.

FTR, a plateau is when you are stalled for a couple of months. Weight loss is not linear or consistent.

This. Just give it time to work.

Everyone else has given you great advice. Just pick a way f eating that works and stick with it. If you go more than a month without losing, then you can reevaluate. Personally, I'm averaging a little over a pound a week, but it drops in spurts. I'll go 2 weeks with no loss or even a slight gain (usually water weight), then I'll drop 3 or 4 lbs the third week. It can be frustrating, but you just have to have patience.

To answer your last question, I usually get calories burned from a HRM. I have found that MFP and gym equipment vastly underestimates my cardio burn but definitely overestimates strength training burn. HRM aren't exact, but they're usually a closer estimate (especially for steady state cardio) than MFP or online calculators because they monitor how hard your heart is actually working rather than how hard the average heart of the average person your height and weight would be working.

Hi- well I can share what has helped me -

I was on a so-called plateau for a month - turns out i was under-estimating my calories. like I thought i was drinking a cup of milk - when i actually measured it, it was 2 cups. then i got a scale and weighed food and actually stopped guessing food amounts.

then i noticed i stopped buying food out at restaurants and making my own food at home, i tried to make as much home made food, and that helped me lose weight faster. I also stopped buying pre-made food like you have a lot of that (like instead of buying frozen Tysons spicy chicken tenders which has a lot of sodium and fat, you would just buy chicken in the meat section and cook your own.

You will probably see your weight go down when you watch your sodium, even though people around here say it does not matter. it does. I keep mine close to 1,500 if i can.

So try to homecook your own food more with fresh ingredients and watch food labels for those fats and sodium, though i do use frozen vegetables like Steam fresh, because it is good and not very fattening for frozen food.

All the advice its very helpful but it seems many of you guys weigh-in several times a week. Its that a good idea? I only do it once a week. Should I change this practice?

It looks to me like your exercise burn numbers for elliptical and walking are about 2x to large. Estimating your weight at 260, your 30 minutes @ 3 miles/hr is more on the order of 120 net calories burned. Don't bother with HRM for this - it can be just as inaccurate for its own reasons - you can just use 0.3 * weight in pounds * miles walked.

Your exercise estimates look a little high to me too. A nutrtionist once told me that an hour of moderately paced walking for an overweight person is roughly 300 cals per hour, give or take a little for speed and weight. I'm 92 kg (203 lbs), and my HRM says I burn 80-90 cals for every 10 minutes on the elliptical when I target a heart rate between 140-150. That's typically 60% of the reading the machine itself gives and 50% of the entry in MFP database.

It looks to me like your exercise burn numbers for elliptical and walking are about 2x to large. Estimating your weight at 260, your 30 minutes @ 3 miles/hr is more on the order of 120 net calories burned. Don't bother with HRM for this - it can be just as inaccurate for its own reasons - you can just use 0.3 * weight in pounds * miles walked.

Your exercise estimates look a little high to me too. A nutrtionist once told me that an hour of moderately paced walking for an overweight person is roughly 300 cals per hour, give or take a little for speed and weight. I'm 92 kg (203 lbs), and my HRM says I burn 80-90 cals for every 10 minutes on the elliptical when I target a heart rate between 140-150. That's typically 60% of the reading the machine itself gives and 50% of the entry in MFP database.

This. Most estimates for cardio are around 10 calories per minute for running. Walking is about half of that. If you are over 450 there and over by 10% on your intake estimates, that's 700 calories extra. That would explain the lack of progress.