I feel like crap! When will my body adjust?

If you JUST gave up soda, that might be what this is. But make sure to eat the entire 1500 calories, ok?

How tall are you? What is your current weight? Are you eating back your exercise calories? How many pounds per week did you tell MFP that you want to lose? Where did you get the 2082 BMR number?

The headaches may be caffeine withdrawal. If you go cold turkey, it shouldn't last too long. Or you could try something like Excedrin Extra Strength which containes caffeine. (Caffeine helps with headaches - even ones NOT caused by caffeine withdrawal.)

Perhaps it would be better for you to ease into things. If your weight loss goal is now set at 2 pounds per week, dial it back to 1 for a while.

I would also agree sounds like sugar withdrawl. This is one of the hardest parts of starting a new diet, especially if you are used to eating a lot of processed foods. Most processed foods will have added sugar, so watch out for those and read labels. You might also check out the Eat More to Weigh Less Group. Sounds like you do quite a bit of exercise, so you may be able to increase your calories. You can always try increasing to 1600 for a couple weeks and see if you gain. Keep drinking plenty of water and make sure you get a good spread of foods, veggies, fruits, meats, dairy, etc. so you are getting all the nutrients you need. If you skimp on veggies, your body may be acting like it's hungry, when really it just needs a little more vitamin C or vitamin A or something like that.

If you suspect caffeine withdrawal also, switch from soda to iced tea. Still has some caffeine, but no sugar.

My son played football in high school and the coach had them eat peanut butter on wheat or rye bread after practice. I was skeptical,but tried it and it really works. I've also tried cashew butter and it's my favorite!!

My BMR at 5'6.5" and 220 lbs is about 1750. I am eating about 1800 a day plus some of my exercise calories, and I very rarely get shakey or too hungry. If you are only eating around 1500, that may not be enough for you. It sounds like your body is telling you exactly that. Maybe try increasing a little bit, until you get to the point that you aren't constantly starving. I didn't see if you said you are eating back exercise calories - if you aren't, maybe try eating back some of them.

I know a lot of people say they are okay at the MFP recommended calorie levels, but it would have me below 1500 by now. I would be a complete light headed, shaking wreck if I tried to do that. Everyone is different. Listen to YOUR body.

I got my BMR from this website http://www.bmi-calculator.net/bmr-calculator/

I told MFP I want to lose 2 pounds a week.

I'm 5'4 and weight 285 right now. Started at 304 back in March or so.

I've had blood work done, everything came back okay except my sugar being at 97. I have had my birth control switched due to getting migraines in the back of my head.

I hope you are taking a progesterone-only birth control. When a person experiences migraines when taking BC, they should switch to a progesterone-only pill.

Also, it sounds like caffeine withdrawal symptoms. They will go away within a week or two.

Make sure you are well-hydrated… drinking 11+ cups of water a day.

Instead of dropping your calorie intake from whatever it was to 1500, you could take a slower approach. E.g. eat what you used to eat before today, and then everyday, drop by 100 calories until you reach 1500 to give your body time to adjust.

MFP is set up so that along with eating the calories it gives you-you need to eat back your exercise calories!
I eat back 1/2 to all of them back depending in my hunger levels. You will still be in deficit and still lose weight!

After a workout you have about a 45 minute window to consume protein (typically a protein shake with at least 30gr protein) and add some type of sugar (like a tbls of chocolate syrup to your protein shake) to cause a glycogen surge so the protein is 'forced' to your muscles for quicker recovery and help reduce soreness, fatigue and cramping. One issue with MFP is the caloric daily break down (percentages and total intake) of protein. Just to maintain the muscle mass you have your body requires 1gr of protein per pound of body weight per day (i.e. if you weigh 150# you need to consume 150gr of protein daily). To gain muscle mass you require 2gr of protein per pound of body weight per day. The more muscle mass (lean) you have the higher your caloric burn will be when exercising...even just walking; plus it takes more energy (calories) to metabolize protein than carbs or fats. Casein protein is one of the best forms of protein especially for that last 'snack' for the night. Cottage cheese is a great source of casein protein...you just have to be careful in what kind you buy, obviously you don't want anything high in fat or sodium. It takes about 6-8hrs to metabolize casein protein so consuming some before bed keeps your metabolic rate up while you're sleeping. Hope this helps...

I think a lot of people feel tired and headachey the first week or two of lowering their calories. It goes away. You can rule out caffeine withdrawal easily enough-- have a small amount and see if the headache goes away right away. It won't put you backward. Just wean down.