Hi Keri,
Another reason for the lightheadedness could also be that taking a hot bath for that long actually begins to melt the accumulated waste in your body, realeasing stored toxins into your bloodstream. This is a VERY good thing if you follow the hot bath with cold water on your *ahem*

, nether regions, for about 15 minutes. This draws the waste to the intestines and colon where it can be eliminated. It's called the sitz bath (and not the one hospitals give you after you have a baby, the original sitz bath)
This is one of the oldest recorded health remedies! It is a lifesave when you are sick, cold, fever, flu, etc. but as a general body cleansing routine, it's really easy and incredibly good for you.
The benefits of the sits bath are as follows, INCREDIBLE skin, weight loss, reduced headaches, joint pain, and general body aches and the bonus.....heightened sexual activity as it stimulates the nerves in the genital regions. There are many other benefits, it's better if you read about them for yourself.
Here is a link about the sitz bath, it's origin and how to do one properly.
http://curezone.com/blogs/m.asp?f=28&i=42
You should also consider Horsetail grass tea for the oesteoporsis. It contains silica, which enables the absorbtion of calcium into the body for use in building tissues. It's sweet and is one of the better tasting herb teas. Otherwise, the excess calcium will be stored in your joints and cause stiffness and maybe arthrituis later in life.
