I am 76 yrs. old, female, and started Keto diet in December of 2017. I weighed 284 lbs.
I have been quite strict, no “cheating”, kept my total carb grams under 20 daily.
I now weigh 158 lbs and look really good for my age. My health has really improved with excellent lab results, arthritis much improved, great sleep, no hunger.
Find a supportive doctor. They are out there, but you do have to hunt for them.
Research the excellent docs on Youtube.
Nice!