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Metabolic control of puberty: 60 years in the footsteps of Kennedy and Mitra’s seminal work
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Journal Article
Metabolic control of puberty: 60 years in the footsteps of Kennedy and Mitra’s seminal work
2024
Overview
An individual’s nutritional status has a powerful effect on sexual maturation. Puberty onset is delayed in response to chronic energy insufficiency and is advanced under energy abundance. The consequences of altered pubertal timing for human health are profound. Late puberty increases the chances of cardiometabolic, musculoskeletal and neurocognitive disorders, whereas early puberty is associated with increased risks of adult obesity, type 2 diabetes mellitus, cardiovascular diseases and various cancers, such as breast, endometrial and prostate cancer. Kennedy and Mitra’s trailblazing studies, published in 1963 and using experimental models, were the first to demonstrate that nutrition is a key factor in puberty onset. Building on this work, the field has advanced substantially in the past decade, which is largely due to the impressive development of molecular tools for experimentation and population genetics. In this Review, we discuss the latest advances in basic and translational sciences underlying the nutritional and metabolic control of pubertal development, with a focus on perspectives and future directions.
Key papers on the role of nutrition and metabolic cues in puberty timing were published in 1963, and there have been many advances in this field in the subsequent 60 years. This Review discusses the latest advances in basic and translational sciences underlying the nutritional and metabolic control of pubertal development.
Key points
In 1963, Kennedy and Mitra published a seminal study in rats demonstrating that body weight is a major determinant of pubertal timing.
An increasing incidence of earlier ages at puberty has been documented; early pubertal timing favours the occurrence of type 2 diabetes mellitus, cardiovascular diseases and certain cancers in adulthood.
Macronutrients and hormones that modulate growth and/or signal adipose tissue mass serve as metabolic cues conveying the nutritional status and stored energy available for sexual maturation, differentiation and growth.
The effect of metabolic cues on puberty is mediated by neural targets upstream of GnRH neurons; considerable progress in defining the neuronal circuitry and glial components has been achieved.
A number of molecular pathways and epigenetic mechanisms have been identified as primary components in the modulation of pubertal timing by hormones and nutritional cues.
Publisher
Nature Publishing Group UK,Nature Publishing Group
