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Estrogen
Losing as little as 5% of your body weight can have a positive effect on estrogen levels. Fat tissue is hormonally active and produces estrogen. When the body carries excess fat, estrogen levels can rise higher than they should, which may cause exacerbated PMS symptoms. Marla Ahlgrimm says that weight loss can improve menstrual cycle regularity and may reduce heavy periods and painful cramping.
Insulin Sensitivity
When the body carries excess weight, it can become resistant to insulin. Marla Ahlgrimm explains that this means the body has to produce more insulin to keep blood sugar levels stable. With weight loss, insulin levels may decrease, and blood sugar can become more stable. Many women also report more consistent energy levels. Regulated insulin is especially important for women with Polycystic Ovary Syndrome.
Testosterone Levels
While testosterone is often associated with men, Marla Ahlgrimm explains that women naturally produce it as well. Increased body weight can raise testosterone levels, which may lead to acne, thinning hair, and increased facial or body hair.
Leptin and Hunger
Marla Ahlgrimm explains that leptin is a key hormone that signals to your brain that you have eaten enough. When body fat is high, leptin levels are also high, but the brain may not respond to it properly. This is known as leptin resistance. With weight loss, leptin sensitivity may improve, making hunger and fullness cues easier for the brain to interpret.
Cortisol
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There are many ways that weight loss can positively affect the body, but these are some of the most direct hormonal impacts in women. Marla Ahlgrimm notes that women who are looking to lose weight should do so under the guidance of their medical team and avoid crash or fad dieting, which can negatively affect overall health.