Sir, having recently delved into the insightful paper by YoldaÅŸ et al., which explores the connection between blood biochemical parameters and oral health in children, particularly those with obesity/overweight,1 we are drawn to the broader spectrum of health interventions. Intermittent fasting (IF), a subject of increasing interest, has demonstrated potential health benefits, encompassing metabolic regulation, weight management, and potential reversal of insulin resistance and hypertension.2 This practice, highlighted in various studies, has also shown positive effects on the gut microbiome3 and a reduction in risk factors associated with cardiovascular diseases such as atherosclerosis.2

IF has been rooted in diverse cultural and religious practices such as Ramadan and Lent, spans centuries, with a historical presence evident in early twentieth century health literature and modern approaches like the 5:2 and ‘16/8' methods. Beyond metabolic benefits, it intertwines with oral health by reducing sugar intake, thereby lowering the risk of dental caries and limiting oral bacteria substrate. Fasting periods, accompanied by hydration, enhance saliva production, promoting enamel remineralisation and maintaining optimal oral pH. For individuals with Type 2 diabetes, intermittent fasting's potential to regulate blood sugar levels becomes crucial in mitigating risks of oral infections and periodontal diseases.4 Additionally, its anti-inflammatory effects and impact on the gut microbiome offer avenues for reducing periodontal complications exacerbated by excessive sugar consumption.5

In conclusion, intermittent fasting presents a promising, non-pharmacological strategy to improve oral health in overweight and diabetic individuals, addressing a range of issues from dental caries to periodontal diseases.