This is what I do for a living: testosterone replacement
Testosterone therapy in women: Myths and misconceptions
https://www.maturitas.org/article/S0378-5122(13)00012-1/fulltext
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Walter if your friend is still suffering from fatigue I’d suggest Cort Johnson’s blog Health Rising. There is also Phoenix Rising. These blogs deal with fatigue related issues. I do hope she’s found a specific cause by now and back living a full life.
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Thank you @Candleflower. She’s finally found inquisitive doctors who have done blood tests and are trying to fix her hormonal balance.I will forward on these references 
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It’s so hard to find inquisitive, curious doctors so she’s ahead right there. Hope they can help her.
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