This is Dr. David
I am sorry about your wife.
she needs to see a doctor and get blood testing to check iron levels, ferritin levels, vitamin D levels, thyroid hormone levels, B12 levels. low levels of these can cause fatigue.
at age 64, she is most likely after her menopause and has low estrogen levels. estrogen hormone replacement therapy could help her increase her energy levels
if she is not drinking enough fluid or water, she could be dehydrated, this can cause dizziness
she needs her ears checked for fluid which can cause dizziness.
he could have low lung capacity from lack of exercise which can cause shortness of breath and weak voice.
she should get bone density test to check for weak bones and osteoporosis which is very common at her age.
is she willing to see the doctors for these tests?
let me know if you have other questions.
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