Tempted by snacks before bed? Here's why - and what you can do about it
Source: BBC Health ↗ (cross-verified by 2 outlets — full list below)
A third of adults admit to snacking after dinner, and the habit is especially prevalent among 18‑ to 24‑year‑olds, where four in five cannot resist a late‑night treat. Dietitian Dr Kristine Beaulieu warns that eating within two hours of bedtime raises the odds of weight gain and obesity, while Professor James Betts of the University of Bath explains that the hunger hormone ghrelin remains elevated later in the day, making evening cravings biologically driven. He adds that meals low in protein, fibre and volume can trigger a “crash” that prompts further snacking, and that the appeal of high‑fat foods intensifies after dark, often overriding fullness signals.
The underlying causes extend beyond hormones. Professor Suzanne Higgs of the University of Birmingham notes that habitual cues—such as turning on the TV—can trigger cravings, while Dr Beaulieu points out that even after a substantial dinner, sugary, fatty or salty foods continue to stimulate brain reward pathways, reinforcing the desire to eat. Research also links refined carbohydrates and added sugars to poorer sleep quality, possibly due to blood‑sugar swings that disrupt hormonal regulation of sleep and appetite. However, Professor Jonathan Johnston of the University of Surrey cautions that sleep deprivation itself can increase appetite for energy‑dense foods, making it hard to determine whether late‑night snacking harms sleep or simply reflects existing sleep problems. Betts emphasizes that evidence is mixed and individual responses to evening foods vary.
Practical advice focuses on reshaping routines rather than imposing strict bans. Higgs suggests planning snacks and avoiding distracted eating, such as while watching television, to reduce inadvertent overconsumption. Beaulieu recommends keeping healthy options—fruit, yoghurt, nuts—readily available and making them the default choice, while allowing occasional modest portions of craved foods like chocolate. By adjusting meal composition to be more satiating earlier in the evening and modifying environmental cues, individuals can mitigate the biological drive to snack and support better weight management and sleep health.
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