My 15 year old daughter has been prescribed progesterone to help with her irregular periods. After reading about it online, she has some concerns. She has read about exteme weight gain after using it. She has been prescribed 100mg to be taken from day 14 to 24. Do you agree with her concern?


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Jul 20, 2013
by: Wray

Hi there In all probability all the blogs she's read have been written by women who were given the standard 20mg/day. This does cause weight gain, as progesterone in low amounts stimulates oestrogen, a mitogen. There's more info on our page about Oestrogen Dominance. It causes cells to proliferate, including fat cells. Progesterone increases metabolism slightly, thereby causing temperatures to rise slightly. Oestrogen has the opposite affect, causing metabolism to slow and therefore decreasing body temps. If she has irregular periods progesterone will help to regulate them, but she might need more than the 100mg/day she's been given. And it should be used for the full 14 days of the luteal phase, not 10 days as she's been instructed. There's more info on our pages How to use progesterone cream and Menstruation. Please could you get a vitamin D test done, as a lack of this causes a reduction in the benefits of progesterone. Take care Wray

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