If you do 16:8 combined with 5:2 fasting, then yes you should lose weight if you eat up to TDEE. However, if you just do 16:8 or your weightloss is v slow with 5:2, you should aim under TDEE at least some days. I would say you gain at least some of the health benefits of fasting as studies of Ramadan fasting suggest this. How much any particular fasting regime helps reduce cancer and Alzheimer risk is not known.
I'm doing 16:8 at the moment and not calorie counting but keeping carbs lowish. I am not going mad in the 8 hours, just having two normal meals. I lose a little weight most days (100-300g) except the days I have cake, wine, dessert etc (i.e. weekends). The Libra app tells me I'm eating about 500 cal under TDEE per day on average to achieve this weightloss.
Hope that helps!
I'm doing 16:8 at the moment and not calorie counting but keeping carbs lowish. I am not going mad in the 8 hours, just having two normal meals. I lose a little weight most days (100-300g) except the days I have cake, wine, dessert etc (i.e. weekends). The Libra app tells me I'm eating about 500 cal under TDEE per day on average to achieve this weightloss.
Hope that helps!