Yes it is good to be reminded of this - it is so easy to think that the body is deficient in all sorts of things, when in fact in many cases part of the answer re well-being - is within ourselves.
I especially agree with the very important reminders about how the effect of stress, and outlook on life/attitude - deeply affects body chemistry and therefore general well-being, in a complex interplay of some of these different hormones mentioned....
....Which is why at menopause when our female hormones are in decline, we need to look to improving our whole lifestyle (including diet and exercise as well as circumstances), at the same time as replacing deficient hormones. That way we can make the most of ourselves hopefully for longer.
Hurdity x