Harvard-trained gut doctor lists 7 things you should never do after eating

Good digestion is the direct result of consistent routines, proper meal timings and mindful lifestyle choices. While a balanced diet is crucial to gut health, certain habits that you do right after meals can also influence your health negatively if left unchecked. They can worsen acid reflux, interfere with nutrient absorption and cause stomach discomfort. Harvard-trained gut doctor Dr Saurabh Sethi recently shared a post on Instagram, listing 7 things you must avoid after eating food that can ruin your overall well-being.

Staying seated for hours

As per Dr Sethi, sitting idle just after finishing your meals may contribute to a post-meal blood sugar level spike. He recommends a 10–15-minute walk after eating to curb glucose spike.

Brushing immediately after acidic foods

Some acidic foods and drinks, like citrus fruits, can weaken tooth enamel temporarily. The Harvard-trained gut doctor suggests waiting about an hour before brushing your teeth. This allows the saliva to neutralise the acids and protect your teeth from decay, claims the American Dental Association.

Drinking tea with iron-rich meals

Both black and green tea contain polyphenols that reduce the iron absorption found in plant-based foods, says Saurabh Sethi. He advises taking a 1- to 2-hour gap between iron intake and tea or coffee consumption, especially if you have iron deficiency.

Exercising intensely on a full stomach

As per the health expert, partaking in strenuous exercises immediately after a heavy meal can cause abdominal discomfort, followed by nausea and acid reflux. So, you must wait 3-4 hours after a large meal before working out.

Using peppermint for acid reflux

Peppermint may worsen heartburn in people who are prone to acid reflux, warns the Harvard-trained gut doctor. The US National Institute of Diabetes and Digestive and Kidney Diseases also mentions that mint in foods and drinks can worsen gastroesophageal reflux disease (GERD) symptoms.

Lying flat after dinner

Dr Sethi disapproves of lying down after dinner as it can make acid reflux worse, especially at night. Instead, the doctor suggests having dinner at least 3 hours before bedtime.

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A post shared by Saurabh Sethi MD MPH | Gastroenterologist (@doctor.sethi)

Dismissing chest pressure as indigestion

In conclusion, the gastroenterologist states that heart attack symptoms can sometimes resemble heartburn. He advises seeking immediate emergency medical attention for unexplained chest pressure, particularly if it is accompanied by breathlessness, sweating and arm or jaw pain.