Hormones!: For women, their weight can effect their hormone balance. This is why it also effects your periods. Typically, being overweight, means you have too much estrogen which confuses your brain and ovaries and gives you irregular periods. The good news, is that with even a little weight loss (5-10%), your periods can readjust back to normal. Being underweight can also lead to irregular periods!
Answered 9/3/2017
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