If you’ve got pelvic floor issues and could be peri menopausal, or are post menopausal, you should probably just ask your doctor for topical oestrogen and HRT.  Don’t pin your hopes on eating more soya yogurt. 
I only found out recently that women’s sexual organs and pelvic floor go through drastic changes as a consequence of falling oestrogen and testosterone in the body. Thinning skin, lost muscle, your clitoris disappearing, reduced sexual function. It’s called Genito-urinary syndrome of the menopause. Look it up if you haven’t heard of it. 
‘Natural ways to increase your oestrogen’ implies there’s something unnatural or undesirable about using the actual hormone. Whereas topical oestrogen is extremely safe and FAR MORE EFFECTIVE than eating soya yogurt. Same with HRT, the oestrogen is body identical and for most women the health benefits are far reaching. A lot more natural than statins, blood pressure medication and antibiotics for repeat urinary infections - all of which you’re more likely to need if you don’t have HRT. This e-book - and this whole website - did me a disservice in not mentioning the thing I really needed to know when I started with prolapse and urge incontinence, which is that my symptoms were not primarily caused by a failure to adequately exercise my pelvic floor, but by predictable, debilitating, and  avoidable changes caused by falling hormones that could be treated easily and safely by the NHS at very little expense. 
My GP today said my rectocele needs oestrogen, not pelvic physio. I could have started that 5-10years ago when instead I  was reading websites like this one and spending a small fortune on vaginal fitbits etc.  I’d done pelvic floor exercises for years and thought I just needed to try harder. 
HRT maybe not be for everyone, but it’s for many more women than are currently taking it and this ebook is symptomatic of the ignorance and misinformation women have been subjected to and which costs us - and our beloved NHS - dearly. 
Don’t get me wrong, Staying active and working on a strong pelvic floor are worthwhile. But please PLEASE don’t think that’s the only - or most important - thing to do without talking to a well-informed GP or menopause specialist or listening to doctors like Rachel Rubin or Louise Newson.