Pamb21 - I've never heard of progesterone causing hair loss? OK, now you have me worried! If anyone else can confirm this, I'd be interested. At least I'd know then. I've had 3 increases in estrogen since May and never had to increase my progesterone at the same time, I've always been on 200mg x 12 days. I did Google hair loss and menopause when it started and the only thing I could find was that its the low estrogen that causes it. But you're right, it's a nightmare trying to figure it all out and, like you, I'm desperate to find a way of stopping the shedding. I have thin hair anyway, so it's desperately unsettling. I dread washing my hair now 😞