As shown in Table 1 [1,8,12-19] , because of the critical role of this pathway in energy regulation, functional abnormalities caused by mutations in any of its critical genes (e.g., LEP , LEPR , POMC , PCSK1 , MC4R ) can lead to severe early-onset obesity and extreme hyperphagia and are often accompanied by endocrine abnormalities due to deficiencies in related hormones, such as hypogonadism and hypothyroidism [12,20]
Use the retatrutide dosage calculator or tirzepatide dosage calculator to determine exact unit measurements for your protocol
A 2025 study of 82 people taking a 14 mg dose of Rybelsus had an average weight loss of 5.7%, or about 13 pounds, after one year
Additionally, although rare, there have been reports linking green tea extract supplementation to liver-related issues, particularly in individuals with sensitive metabolisms or those taking high doses for extended periods (Saha et al., 2024)
Both deficiencies cause fatigue as a primary symptom, and both become more common during Retatrutide treatment
[1] [2] [12] The best supporting evidence is indirect: in STEP 4 and SURMOUNT-4, people who stopped these medications regained most of their lost weight, while people who continued kept their results