PMID- 37456384 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230718 IS - 2168-8184 (Print) IS - 2168-8184 (Electronic) IS - 2168-8184 (Linking) VI - 15 IP - 6 DP - 2023 Jun TI - The Impact of Hypothyroidism on Diabetes Mellitus and Its Complications: A Comprehensive Review. PG - e40447 LID - 10.7759/cureus.40447 [doi] LID - e40447 AB - Diabetes mellitus (DM) is one of the most prevalent metabolic disorders in the world and is characterized by excessive blood glucose levels, which lead to deranged carbohydrate, protein, and lipid metabolisms. At its core, DM is an impairment of insulin metabolism, leading to a plethora of clinical features. The thyroid gland is another vital cog in the wheel of the endocrine system, and the hormones synthesized by it are heavily involved in the control of the body's metabolism. Hypothyroidism is a state in which thyroid hormones are deficient due to various factors and is characterized by a metabolically hypoactive state. Together, insulin, implicated in DM, and thyroid hormones engage in an intricate dance and serve to regulate the body's metabolism. It is imperative to explore the relationship between these two common endocrine disorders to understand their clinical association and mold treatments specific to patients in which they coexist. Both type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) have been shown to have an increased association with hypothyroidism, especially in patients with risk factors including female sex, hyperlipidemia, obesity, and anemia. This review also explores DM's macrovascular and microvascular complications and their association with hypothyroidism. It is of great use to screen for hypothyroidism in diabetic patients. Specific protocols, especially for patients at an elevated risk, provide improved quality of life to patients affected by this highly prevalent disease. CI - Copyright (c) 2023, Vemula et al. FAU - Vemula, Shree Laya AU - Vemula SL AD - Department of Internal Medicine, Anam Chenchu Subba Reddy (ACSR) Government Medical College, Nellore, IND. FAU - Aramadaka, Saikumar AU - Aramadaka S AD - Department of Internal Medicine, Narayana Medical College, Nellore, IND. FAU - Mannam, Raam AU - Mannam R AD - Department of General Surgery, Narayana Medical College, Nellore, IND. FAU - Sankara Narayanan, Rajagopal AU - Sankara Narayanan R AD - Department of Internal Medicine, Narayana Medical College, Nellore, IND. FAU - Bansal, Arpit AU - Bansal A AD - Department of Internal Medicine, Narayana Medical College, Nellore, IND. FAU - Yanamaladoddi, Vishnu R AU - Yanamaladoddi VR AD - Department of General Surgery, Narayana Medical College and Hospital, Nellore, IND. FAU - Sarvepalli, Sai Suseel AU - Sarvepalli SS AD - Department of Internal Medicine, Narayana Medical College, Nellore, IND. LA - eng PT - Journal Article PT - Review DEP - 20230615 PL - United States TA - Cureus JT - Cureus JID - 101596737 PMC - PMC10349367 OTO - NOTNLM OT - diabetic microvascular complications OT - endocrine disorders OT - hypothyroidism and type 2 diabetes mellitus OT - thyroid disorder OT - type 2 diabetes mellitus COIS- The authors have declared that no competing interests exist. EDAT- 2023/07/17 06:42 MHDA- 2023/07/17 06:43 PMCR- 2023/06/15 CRDT- 2023/07/17 04:23 PHST- 2023/06/15 00:00 [accepted] PHST- 2023/07/17 06:43 [medline] PHST- 2023/07/17 06:42 [pubmed] PHST- 2023/07/17 04:23 [entrez] PHST- 2023/06/15 00:00 [pmc-release] AID - 10.7759/cureus.40447 [doi] PST - epublish SO - Cureus. 2023 Jun 15;15(6):e40447. doi: 10.7759/cureus.40447. eCollection 2023 Jun.