In our weight-obsessed society, women often pay more attention to the number of calories they eat than to the nutrients associated with those calories. But did you know a low-calorie diet that's also low in nutrients might actually hinder your weight loss efforts? If you miss out on essential vitamins, minerals and other nutrients, your body doesn't function at an optimal level. In fact, research published in the American Journal of Clinical Nutrition in March 2003 shows a strong relationship between low intake of essential nutrients and increased BMI and waist circumference.

If you feel tired, have a lack of energy or focus, or experience a decrease in sex drive, you may need to reevaluate your meal plan. We've rounded up a list of the nutrients most often lacking in women's diets, along with easy tips to boost your intake of delicious foods that contain these nutrients. Eating well not only makes you feel vibrant and energetic — it can also give you the mental push you need to lose weight.

Fiber

With all the emphasis on fiber intake, women still get only 15 grams per day, compared to the recommended 25 grams. Low fiber intake is associated with increased risk of heart disease — the number one killer of women — as well as some types of cancer and type 2 diabetes. Eating more fiber will help you feel full and help you stay away from candy bars. Consume more fruit, veggies, higher-fiber cereals and legumes each day to boost your fiber intake. To avoid uncomfortable side effects such as gas and bloating, increase fiber gradually and drink more water throughout the day.