Can a longer overnight fast help men on prostate cancer treatment?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Individuals must meet all of the following inclusion criteria in order to be eligible to participate in the study: * Must be 18 years of age or older * Provide signed and dated informed consent form * Had a histological diagnosis of PCa (Stage IIA-IVB) * Are beginning or receiving ADT (including medical castration with LHRH-agonist-antagonist androgen receptor modulators) for PCa with an anticipated duration of ≥ 3 months. The ADT is defined as: (a) Gonadotropin Releasing Hormone (GNRH) agonist (including leuprolide \[Lupron/Eligard\], goserelin \[Zoladex\], triptorelin \[Trelstar\], histrelin \[Vantas\], and abiraterone \[Zytiga\]) alone; (b) GNRH agonist with oral androgen receptor blockade (including bicalutamide \[Casodex\], flutamide \[Eulexin\], and enzalutamide \[Xtandi\]), and (c) GNRH agonist, oral androgen receptor blockade, and 5-alpha reductase inhibitors. Patients on androgen receptor modulators and second-generation androgen receptor antagonists will qualify. * Intermittent ADT will be allowed as long as the overall duration is more than 3 months. * BMI ≥25 kg/m2 * Radiation therapy will be allowed concurrently. * Willing and able to comply with the protocol for the duration of the study * Able to speak, read and write English * Has a mobile phone with TXT capability. Exclusion Criteria: * An individual who meets any of the following criteria will be excluded from participation in this study: * Inability to tolerate a normal diet (may include an active malabsorption syndrome at time of consent (i.e. Crohn's disease, major bowel resection leading to permanent malabsorption) * Patients on concurrent chemotherapy will be excluded. * ECOG score \> 2 * Medications such as finasteride/dutasteride/saw palmetto are not allowed. * Insulin injection or glyburide medication