Further proof of chemo brain

A study (because we needed another study to keep all those researchers busy) shows that an EEG can detect chemo brain in women undergoing chemotherapy for breast cancer. So will people now really start to believe chemo brain, or cognitive deprivation, exists? For some reason, this reminds me of when doctors told women their cramps were imaginary.

If I think about the research and clinical trials put into development of chemotherapy and other drugs, when was chemobrain determined to be a 'non-issue'? It is a true side effect of chemotherapy for patients. If its temporary its one thing but for some women it really never goes away. So why was its impact determined not to be of importance?

So pretend if it it was not impact on your brain but on your heart or lungs which could be measured medically through tests quite easily and left the patient with a permanent impairment which interfered with their daily living and ability to hold a job. Would it be considered then to be a caution or warning when prescribing?

Chemotherapy drug doses are estimated based on patient weight and a few other factors so there is not really an exact dose to give everyone. It appears to me (and I am not a doctor) that the patient's first dose is a guess based on their weight and a few other factors, and then based on their reactions to it, they alter the dose for future rounds. Would lower doses still be effective but with fewer side effects such as chemo brain? I think we already know the answer - more research is needed.