Experts say there is no universal clock time that works for everyone.
What matters more is when dinner falls in relation to the body’s biological clock and bedtime.
An earlier dinner may be beneficial, but there is no fixed 7 p.m. or 8 p.m. cut-off.
The gap between dinner and sleep, the quality and composition of the meal, physical activity and individual health needs all play a role.
Insulin sensitivity and glucose tolerance generally decrease as the day progresses, so the body may not handle a heavy meal as well later in the day.
However, dinner timing is only one part of the picture.
The amount and quality of food, physical activity, sleep and health conditions such as diabetes and gastro-oesophageal reflux disease (GERD) also affect how the body responds to a meal.
Why skipping breakfast may pose a bigger health risk than you realise The gap before sleep “There is no evidence-based ideal dinner time,” said Aafrin Shabbir, medical director, senior consultant and diabetologist, Tambaram Medical Centre and CODE Clinic.
The body’s metabolic efficiency is generally better during the daytime, she said, making a smaller and lighter dinner preferable.
She also cautioned against assuming that eating at 10 p.m. is unhealthy for everyone.
Someone who sleeps at 1 a.m. has a different biological rhythm from someone who sleeps at 10 p.m.
“One rule doesn’t fit all,” she said.
Saravana Bharathy S.
P., internal medicine, Dr Mehta’s Hospitals, recommends leaving about two to three hours between dinner and bedtime.
This is particularly relevant for people with reflux or digestive discomfort, as lying down soon after a meal can worsen symptoms.
Swathi Padmanaban, consultant, paediatric & adolescent endocrinologist and diabetologist, Rainbow Children’s Hospital, Chennai, said eating dinner earlier is generally better for metabolic health when practical.
She advised against making dinner the largest meal of the day, particularly when it is eaten close to bedtime.
Meal timing is linked to the body’s circadian rhythm.
The liver, pancreas and gastrointestinal tract have their own biological clocks that work with the brain’s central body clock.
As the biological day progresses, insulin sensitivity and glucose tolerance tend to fall, meaning the same meal may cause a greater rise in blood glucose when eaten later.
Healthy habits and the holiday season: Tips for families to navigate eating, physical activity and sleep Late eating Studies have found that eating dinner at 10 p.m., compared with 6 p.m., led to higher overnight blood glucose and changes in fat metabolism, despite the meals having the same calories and nutrients.
“Late eating may have greater metabolic implications for people living with diabetes, prediabetes and obesity.
A carbohydrate-rich meal late at night can cause a larger rise in blood glucose, particularly when physical activity is low,” Dr.
Swathi said.
Late, heavy meals can also cause bloating, indigestion and acid reflux and may affect sleep.
However, an occasional late dinner is unlikely to carry the same significance as a regular pattern of late-night eating.
Eating after a particular hour does not, by itself, cause obesity or heart disease.
Overall calorie intake, food quality, physical activity, sedentary behaviour and sleep also play major roles.
“People who regularly eat late may also snack more, sleep less or have irregular work schedules.
This makes it difficult to separate the effect of dinner timing from other lifestyle factors,” Dr.
Bharathy said.
It’s not just what you eat, when you eat also matters Healthier dinner timing For children and adolescents, the focus should be on regular meals, adequate nutrition, appropriate portions, physical activity and good sleep rather than restrictive eating windows.
If a late dinner is unavoidable, a moderate and balanced meal is preferable.
Vegetables, protein and fibre can be included, while sugary drinks, sweets and fried or fatty foods should be limited.
It is also better to avoid coming home extremely hungry and eating a large, carbohydrate-heavy meal just before bed.
If possible, part of the meal can be eaten earlier and the later meal kept smaller.
A short walk after dinner may also help with post-meal blood glucose control.
For people living with diabetes, meal timing should be planned around their medication, insulin requirements, blood glucose levels and HbA1c rather than a fixed cut-off.
The practical approach is to eat earlier when possible, leave about two to three hours between dinner and bedtime, keep late meals light and balanced, and maintain regular eating and sleep schedules.
