For some people, weight gain or loss can be related to problems with their thyroid -- the gland located in your neck that regulates your body's metabolism.

There are two main types of thyroid disorders:

• Hypothyroidism: Your thyroid doesn't produce enough thyroid. Symptoms include weight gain, sluggish feeling, dry skin and hair and muscle cramps. This is the most common form of thyroid disease.
• Hyperthyroidism: an overactive thyroid and often the cause of weight loss.

Don't be too quick to blame your thyroid for weight gain or loss. Check with your doctor, who may order a test to make sure. And if you have any type of thyroid condition, contact a registered dietitian for help in developing a healthful eating plan.