I don’t think there is any “Magic Pill” for weight loss.
The more I read, the more I come to understand how individualized our systems are – due to genetics, upbringing and environment. What works for one person may not for the next…
You have to experiment for yourself to find what your body needs and how to convince it the excess weight is no longer necessary.
79kg doesn’t sound all that unhealthy to me for a 5’9″ man… Some “padding” is healthy. You want some reserves available if you’re ever in an accident and land in the hospital unable to eat for a while.