Identical twins not only share DNA but also a uterus, potentially explaining their metabolic similarities. Research shows that fetal overnutrition, indicated by high birth weight, can lead to obesity later in life. This concept is illustrated in animals like Shetland ponies and draft horses, where offspring are smaller when carried by the pony. Surrogacy studies reveal that the intrauterine environment plays a crucial role in determining birth weight. Even after identical DNA is passed down, a mother’s weight during pregnancy can impact her children’s obesity risk. Epigenetics, the study of how our environment influences gene expression, may explain this phenomenon and suggest that a mother’s weight status during pregnancy can affect future generations. Breastfeeding has shown some potential in lowering obesity risk, especially when exclusive. Experts suggest that pre-pregnancy weight optimization can help prevent pediatric obesity. Despite the challenges, addressing maternal weight before pregnancy can make a significant difference. The obesity epidemic is complex, influenced by various factors explored in detailed video series. Our maternal diet also plays a role in shaping our health outcomes, highlighting the importance of mindful eating habits.