Also, while your menstrual cycle may not affect weight gain or loss, losing or gaining weight can affect your menstrual cycle. Women who lose too much weight or lose weight too quickly may stop having a period, or have irregular periods. Women who have obesity may also have irregular periods. A regular period is a sign of good health. Reaching a healthy weight can help women who have irregular periods to have cycles that are more regular. Learn more in our Menstrual Cycle section.
You know you're supposed to eat more protein to lose weight, but you might not know exactly why. Well, it actually has to do with how your body handles insulin. "Your body starts to produce more insulin as you age, since your muscle and fat cells aren't responding to it properly," explains Louis Aronne, M.D., director of the obesity clinic at Cornell University.
One of the biggest mistakes women make when trying to figure out how to lose belly fat: too many crunches, too little cardio. No matter how toned your abs are, your belly won't look flat until you get rid of the layer of fat on top of them, says Jessica Smith, a certified personal trainer and star of fitness DVDs. For that, you need to rev your calorie burn. Interval training, in which you alternate high-intensity bursts of activity with easier bouts, has been shown to zap more belly fat than steady-paced moderate workouts.
Even tiny changes in thyroid function can meddle with the way your body processes food for fuel because thyroid hormones affect metabolism and how your body deals with weight. When thyroid hormone levels drop too low, you can start gaining weight. You may also have other symptoms that don’t seem connected — low energy, feeling cold a lot, skin issues or hair loss.
Certain carbohydrates have a tendency to be poorly absorbed in your intestines and then rapidly fermented, leading to gas and bloating. Common culprits include refined carbohydrates and simple sugars—like those found in processed foods with added sugars. Excess sodium can also cause bloating due to increased water retention. Opt for freshly prepared foods and reduce processed, packaged foods to cut back on belly bloaters. In the morning, swap your sugar-laden bowl of cereal for this Green Smoothie, made with fresh fruits and vegetables to get your day started the right way.