Fasting

Does fasting really help? Experience with this? I’m torn because I feel like I need to fast to help repair my gut health to in turn help my mental health too as we have learned it’s all connected. But at the same time I know it’ll make me feel worse in the mean time because my anxiety seems higher when I don’t keep food in my system, I feel more faint and exhausted when I’m hungry. The past couple days my stomach has hurt, I feel nauseous, and it’s like anything I eat my body rejects but it makes me feel a little better mentally? Idk I’m just willing to try anything to get better at this point. I went back to the Dr and got prescribed buspirone as well. I haven’t taken it yet but I’m thinking about trying fasting first. Thoughts? Experiences?