Eating too little can be extremely dangerous for your body. According to Medical News Today, having a Body Mass Index (BMI) of under 18.5 can lead to malnutrition, osteoporosis, developmental problems, a weakened immune system, anemia, and chronic fatigue. Healthline reports that the average woman needs about 2000 calories per day to maintain her weight and about 1500 calories to lose one pound of weight per week, though you should consult with your healthcare provider to see what's best for you.
Hu, T., Mills, K. T., Yao, L., Demanelis, K., Eloustaz, M., Yancy, Jr., W. S., ... Bazzano, L. A. (2012, October 1). Effects of low-carbohydrate diets versus low-fat diets on metabolic risk factors: A meta-analysis of randomized controlled clinical trials. American Journal of Epidemiology, 176(Suppl. 7), S44–S54. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3530364/
Eat Breakfast Every Day. One habit that's common to many people who have lost weight and kept it off is eating breakfast every day. "Many people think skipping breakfast is a great way to cut calories, but they usually end up eating more throughout the day, says Elizabeth Ward, MS, RD, author of The Pocket Idiot's Guide to the New Food Pyramids. "Studies show people who eat breakfast have lower BMIs than breakfast-skippers and perform better, whether at school or in the boardroom." Try a bowl of whole-grain cereal topped with fruit and low-fat dairy for a quick and nutritious start to your day.