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Unit II · Diseases of the gastrointestinal tract
7 min readConcept sheetOften a 5-mark answer; types come as a 2-mark question

Constipation

Constipation is infrequent, hard stools passed with straining. The cure is mostly in the kitchen: fibre, fluid and activity.

DefinitionFewer than three stools a week, or hard stools passed with straining
TypesAtonic, spastic, obstructive
FibreAbout 25-40 g a day for adults (sources differ; ICMR-NIN 2020 suggests 40 g per 2,000 kcal); raise slowly
Fluid8-10 glasses (2-2.5 litres) a day with a high-fibre diet

At a glance

DefinitionFewer than three stools a week, or hard, dry stools passed with straining or a feeling of incomplete emptying
Atonic (lazy bowel)Weak colon muscles; common in the elderly, after illness, in obesity and with low fibre, low fluid and inactivity
SpasticIrregular, tight contractions of the colon; small, hard, pellet-like stools; linked to stress and IBS
ObstructiveBlockage by tumour, stricture or adhesions; needs medical or surgical care, not diet alone
CausesLow fibre, low fluid, inactivity, ignoring the urge, irregular meals; drugs (iron, calcium, aluminium antacids, codeine); pregnancy; hypothyroidism; diabetes
SymptomsHard stools, straining, bloating, loss of appetite, headache, coated tongue; long-term: piles and fissures

Dietary principles

NutrientRecommendationWhy
FibreHigh: about 25-40 g a day (sources differ; ICMR-NIN 2020: 40 g per 2,000 kcal) from whole grains, pulses, vegetables, fruits; raise over 2-3 weeksFibre holds water and adds bulk, so stools are soft and move faster
Fluid8-10 glasses (2-2.5 litres) a day; a warm drink on wakingFibre needs water to work; without it fibre can worsen constipation
EnergyNormal for the person's weightVery low food intake means little stool
FatNormal amounts; a little oil or ghee is fineFat helps stools pass smoothly
ProbioticsCurd and buttermilk dailySupport healthy gut bacteria
Spastic typeSoluble fibre (isabgol, oats, fruits) rather than harsh bran; regular, relaxed mealsOlder books advise a low-residue diet at first; current practice favours gentle soluble fibre

Foods to include and avoid

Food groupIncludeAvoid or limit
CerealsWhole-wheat atta with bran, broken wheat, ragi, jowar, bajra, oats, hand-pounded or brown riceMaida, white bread, biscuits, polished rice only
PulsesWhole green gram, sprouts, rajma, chana, sundalNone needed, but raise slowly if they cause gas
VegetablesGreen leafy vegetables, beans, carrot, drumstick, cabbage, saladsOnly over-cooked, peeled vegetables
FruitsGuava, papaya, orange with pulp, pear, figs (anjeer), dates, prunes, raisins soaked overnightStrained fruit juice instead of whole fruit
OthersIsabgol in water, curd, buttermilk, warm water, flaxseedExcess tea or coffee, alcohol, fried and processed snacks

Sample one-day menu (high-fibre diet)

MealMenu
Early morningWarm water (1-2 glasses); 4-5 soaked raisins or 2 figs
BreakfastBroken wheat (dalia) vegetable upma or ragi dosa with sambar
Mid-morningGuava or papaya (1 cup)
LunchWhole-wheat chapati (2) with brown or hand-pounded rice, dal, keerai (greens) poriyal, carrot-cabbage salad, curd
EveningSprouted green gram sundal; buttermilk
DinnerJowar or bajra roti, mixed vegetable curry, dal
Bedtime1 teaspoon isabgol in a glass of warm water or milk
At the bedside

Patients on iron or calcium tablets, bed-ridden patients and the elderly in wards often become constipated. Add fruit, greens and isabgol to their trays and push fluids unless fluid is restricted.

Exam angle

2 marks: “Name the types of constipation.” Atonic (weak colon muscles), spastic (irregular tight contractions) and obstructive (blockage).

5 marks: “Explain the dietary management of constipation.” High fibre (25-40 g) raised slowly, 8-10 glasses of fluid, curd, regular meals and exercise, foods to include and avoid, note on spastic type.

10 marks: “Discuss the types, causes and dietary management of constipation with a sample menu.” Define, three types, causes, symptoms, principles table, foods to include and avoid, and a high-fibre menu.

Remember it

Fibre needs water. Constipation diet = 3 Fs: Fibre, Fluid, Fitness (activity).