Summary
This summertime, I found later sunsets meant later meals and that meant a later bedtime.
Visiting my family also meant dining out late into the evening, which not only caused major social jetlag but also difficulty falling asleep after finishing dinner around 10pm.
I felt uncomfortable and stuff…
Source: Toms Guide

AI News Q&A (Free Content)
Q1: What are the primary methods of intermittent fasting and their potential health benefits?
A1: Intermittent fasting includes methods such as alternate-day fasting, periodic fasting like the 5:2 diet, and daily time-restricted eating. Studies suggest that intermittent fasting can help with obesity, insulin resistance, dyslipidemia, hypertension, and inflammation. However, some academics warn about its risks as a dietary fad, and it's recommended to consult with a healthcare provider before making significant dietary changes.
Q2: How does intermittent fasting impact sleep patterns and stability?
A2: Intermittent fasting can influence sleep stability and circadian transitions, as metabolic changes like ketone metabolism regulate sleep dynamics. Research indicates that metabolic interventions such as beta hydroxybutyrate supplementation and intermittent fasting can selectively affect the timing of transitions between day and night sleep, rather than altering the overall sleep duration.
Q3: What are the genetic factors involved in the response to intermittent fasting?
A3: Genetic factors significantly affect responses to intermittent fasting. Studies using animal models, such as the Collaborative Cross mice, show that sex and genetic background lead to variable outcomes in metabolic, hematologic, and immunologic health. These findings highlight the genetic determinants in dietary intervention responses and their implications for human health and longevity.
Q4: What is the stance of the US National Institute on Aging regarding intermittent fasting?
A4: The US National Institute on Aging states there is insufficient evidence to recommend intermittent fasting. They advise consulting with healthcare providers to discuss potential benefits and risks before implementing significant dietary changes.
Q5: Can intermittent fasting be considered safe, and what are the potential adverse effects?
A5: Preliminary evidence suggests that intermittent fasting is generally safe, though comprehensive studies on its adverse effects are lacking. The method's safety and efficacy can vary among individuals, and caution is advised when considering it as a dietary practice.
Q6: How does intermittent fasting compare with other dietary interventions in terms of longevity effects?
A6: Intermittent fasting, along with caloric restriction, has been shown to enhance metabolic health and extend lifespan in preclinical models. However, individual responses vary due to genetic factors, and more research is needed to fully understand its effects on human longevity.
Q7: What are some potential challenges or criticisms of adopting intermittent fasting as a dietary practice?
A7: Critics of intermittent fasting point out the lack of comprehensive studies on its long-term adverse effects and its classification as a dietary fad. Moreover, individual variability in response to fasting necessitates personalized dietary recommendations.
References:
- Intermittent fasting - https://en.wikipedia.org/wiki/Intermittent_fasting
- Genetic regulation of fasting-induced longevity effects - https://arxiv.org/abs/2025.09303
- Computational identification of ketone metabolism as a key regulator of sleep stability and circadian dynamics via real-time metabolic profiling - https://arxiv.org/abs/2025.03116