Losing Weight Too Fast?

I started my diet at 360lbs, almost four months ago and in that time I've lost 71lbs.  I'm eating between 1,500-1,700 calories a day so I think I'm eating enough, and I'm happy with the weight loss but I'm wondering if I'm losing it too quickly.  Just from yesterday I lost 7.5lbs and did nothing out of the ordinary except have some Buffalo Chicken sandwiches.

I should also add that last month my doctor noticed my thyroid levels were a little high so he's having more blood work done next month for Graves disease.

I also haven't been doing much excercise outside of walking and a little bit of work out on the Wii Fit.

If you're a 289lb (20st 9lb) male and you're reasonably active then 1500-1700 is a very low intake.... too low, in fact.  2500 would be more sensible.  An average loss of 4.5lbs is certainly rapid -  1% of your body-weight per week is a 'safe' average.  Having said that  a 7.5lbs loss in one day is very unusual and I'm glad you're talking to your doctor.  If your thyroid levels are high that might have something to do with it.  In the meantime, I'd recommend that you aim to eat more.  You're risking not getting the right nutrition at this level. 

My doctor recommended 1,700 a day but some day I can't eat enough to make it.  I mostly eat whole meats and vegtables as well as take vitamin supplements so I thought I was getting enough as far as the right nutrition.  I felt the only thing I was missing on was more excercise, which I planned to increase once I broke 300lbs. 

I gained the weight rapidly after a bike accident.  I weight a solid 200lbs (I'm 6'2") at the time.  I'd ride 35-40 miles a day and probably ate 3,500-4,000 calories a day.  After the acident I gained 200lbs in a year (eating the came calories) and have struggled for 11 years to take it off.  So I had thought losing the weight as fast as I have was normal until the 7.5lb loss over night.

I see my doctor in a couple weeks to find out about my thyroid issue.

Thanks for the feedback.

You will struggle to eat 1700 calories if you don't eat carbohydrates.  You're also not getting a balanced diet because complex carbohydrates such as wholemeal breads, brown rice, starchy veg, pulses (legumes) and pasta contain lots of vitamins & minerals that aren't necessarily found in meat and vegetables.  Vitamin supplements are no substitute for food, unfortunately.  I think 1700 calories constitutes a starvation diet for someone your size but if that's your doctor's recommendation then that's what you go with.  However, if you plan to start exercising you'll need a lot more than 1700 calories.

To make sure you get a balanced diet and that you're taking in the right amount of energy use the CC food log as a planning tool.   Work out in advance what you're planning to eat and if you can see it's coming up short you can easily add in some high-calorie, healthy foods to make up the difference.  A portion of pasta with supper, some olive oil on a salad, a handful of nuts as a snack.... that kind of thing.   You can also run the nutritional analysis to see if your diet is reasonably balanced.   Complex carbohydrates should be 50-65%, protein 15-25% and fats 25-30%.  Best of luck

I do have Special K for breakfast every day with a fat free milk and on the weekends I'll have a sandwich on a wheat or multigrain roll.  I also have a multigrain pasta with a tomato sauce.  The doctor told me no on rice (though I do have brown rice once in a blue moon) and no potato products, which for the most part I've steered clear of.

I weighed this morning and gained six of the seven and a half pounds I lost.  I was studying last night and had a lot of diet soda so that proably caused some water weight gain.