ArticleGenetics and molecular biology2026
Obesity in young adults: The differentiated impact of LEP, LEPR, and FTO gene variants.
Article in Genetics and molecular biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Obesity is a global public health issue, increasingly affecting young adults. Its association with other diseases highlights the urgency of developing prevention strategies. Genetic factors play a significant role in susceptibility to obesity, making the identification of risk-associated variants essential for prevention strategies. Therefore, this study aimed to analyze LEP, LEPR, and FTO variants as potential genetic risk factors for obesity in Brazilians aged 18-35 years. The participants were classified with, or without obesity/overweight. Genotyping was performed by ASO-PCR, RFLP, and DNA sequencing. A questionnaire was applied to collect anthropometric data, and personal and family medical history. Preliminary analyses indicated that obesity was significantly associated with individuals over 25 years of age; therefore, to specifically investigate early-onset obesity, the primary genetic association analyses were restricted to the 18-25 age group. A significant association was found between the LEP rs7799039 variant and BMI ≥ 25 Kg/m², and LEP rs17151919 was strongly associated with BMI ≥ 30 Kg/m² in this age group. These findings underscore the importance of identifying genetic variants that increase the risk of obesity in young adults and suggest contributing to the development of more effective and personalized prevention strategies, integrating knowledge from genetics, medicine, and nutrition.
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