Triglycerides: Storage Fat, the Blood Test and What Raises It in India

Triglycerides are the body's storage fat and the form in which fat travels through the blood. They are also one line on a lipid profile. The figure that matters most for an Indian reader comes from the ICMR-INDIAB survey: 29.5 per cent of adults tested had fasting triglycerides of 150 mg/dL or more, the cut-off the survey used for a high result. This entry in the fats section of the handbook explains the fat, the test, what pushes the number up, and when a very high result is urgent.

What are triglycerides?

A triglyceride is three fatty acids joined to one molecule of glycerol. ICMR-NIN's Dietary Guidelines for Indians 2024 describe fatty acids as the main constituents of all dietary fats, present in the form of triglycerides. The oil in your kadhai, the ghee on a roti and the fat inside a peanut are all triglycerides; what differs is the mix of saturated, monounsaturated and polyunsaturated fatty acids attached. Each gram supplies 9 kcal, against 4 kcal for a gram of carbohydrate or protein.

The body makes its own as well. The US National Heart, Lung, and Blood Institute explains that triglycerides come from the fats you eat and from extra calories the body does not need straight away: unused calories are stored as triglycerides in fat cells and released when energy is needed. That is why a diet with little visible oil can still raise them. Triglycerides are a different substance from cholesterol, a waxy substance found in every cell.

Triglycerides on the lipid profile

The blood test is called a lipid profile or lipoprotein profile. It reports triglycerides beside total, LDL and HDL cholesterol; the Indian survey quoted below worked in mg/dL. You may be asked to fast beforehand. A European consensus statement in 2016 concluded that fasting is not routinely required, because triglycerides rise by only about 26 mg/dL on average in the one to six hours after an ordinary meal; the Endocrine Society's guideline bases a diagnosis on fasting levels. Follow whatever instruction your own laboratory or doctor gives.

The table tells you how reports are labelled and nothing more. What a given number means for you depends on your other lipid results, blood sugar, blood pressure, weight, family history and any medicines, and that judgement belongs to your doctor. The Institute suggests a lipid profile every five years for healthy adults, and more often for older adults, people with diabetes and those with a family history of heart disease.

How common are high triglycerides in India?

Close to three in ten adults, on the best Indian data available. Phase I of the ICMR-INDIAB study drew fasting blood from every fifth participant, 2,042 adults aged 20 and over, in Tamil Nadu, Maharashtra, Jharkhand and Chandigarh. Of these, 29.5 per cent had triglycerides of 150 mg/dL or more. Men were affected more than women, and city residents more than villagers. In all, 79 per cent had at least one abnormal lipid value.

The pattern starts early. ICMR-NIN's 2024 guidelines quote the Comprehensive National Nutrition Survey 2019, in which 34.0 per cent of children aged 5 to 9 and 16.1 per cent of adolescents aged 10 to 19 had high triglycerides. The later national report of ICMR-INDIAB, covering 113,043 people across 31 states and territories, put dyslipidaemia of any kind at 81.2 per cent of those tested. The INDIAB authors describe Asian Indians as having a typical pattern of low HDL cholesterol with raised triglycerides.

What raises triglycerides?

Extra energy from any source, and sugar, refined carbohydrate and alcohol in particular. The Institute lists three habits that push the level up: too little exercise, food high in fat and sugar, and too much alcohol. It also lists conditions that do so, including diabetes, overweight and obesity, and kidney, liver and thyroid disease, along with some medicines and inherited disorders. In the INDIAB data, high triglycerides were linked with urban residence, obesity, abdominal obesity, diabetes and prediabetes.

ICMR-NIN's 2024 guidelines make the same points for Indian diets. They state that alcohol increases serum triglyceride levels, that obesity is often accompanied by raised LDL cholesterol and triglycerides, and that foods containing sugar or refined carbohydrate cause a sharp rise in insulin. The handbook's account of how insulin works explains that link, and the entry on added sugar covers the limit. A review of alcohol and plasma triglycerides adds that obesity exaggerates the rise that alcohol causes.

How much fat and sugar do the Indian guidelines allow?

There is no dietary requirement for triglycerides as such, since they are simply what fat is made of. ICMR-NIN sets limits on the things that feed them. The table gathers the figures from its Nutrient Requirements for Indians 2020 and Dietary Guidelines for Indians 2024. Check your own waist with the waist-hip ratio calculator.

Sugar and fat in Indian household measures

The limits are easier to use in spoons and glasses. The guidelines count a teaspoon as 5 g, so 25 g of added sugar is five level teaspoons across the whole day, including what is already inside sweets and drinks. Sugarcane juice, by the same document, carries 13 to 15 g of sugar in every 100 ml. The oil and jaggery figures below are calculated from the Indian Food Composition Tables 2017; the ranked fat content of Indian foods has the rest.

What do diet trials show?

That sugar raises triglycerides and that cutting carbohydrate lowers them, with a cost. A meta-analysis of 39 randomised trials, 37 of which reported blood lipids, found that higher sugar intakes raised triglycerides by 0.11 mmol/L compared with lower intakes, and that the effect did not depend on any change in body weight. On the scale used by the European consensus statement, where 1.7 mmol/L equals 150 mg/dL, that is roughly 10 mg/dL. The site's guide to how much sugar a day is reasonable turns the limit into meals.

A second meta-analysis compared low-carbohydrate with low-fat diets in 11 trials lasting six months or more, with 1,369 participants. Triglycerides fell by 0.26 mmol/L more on the low-carbohydrate diets, about 23 mg/dL, and weight by 2.17 kg more. LDL cholesterol, though, rose by 0.16 mmol/L, and the authors asked that the benefit be weighed against that rise. The diets tested were Atkins-style or held carbohydrate below 20 per cent of energy, far under ICMR-NIN's range, so this is trial evidence and not a recommendation.

Does the type of fat, or exercise, change the number?

Both do, by modest amounts. The Cochrane review of 2020 found that long-chain omega-3 fats, EPA and DHA, lowered triglycerides by about 15 per cent in a dose-dependent way, on high-certainty evidence drawn mainly from supplement trials; the entry on omega-3 fatty acids covers food sources and the cautions about capsules. In the other direction, a meta-analysis of seven trials found that MCT oil raised triglycerides by 0.14 mmol/L, as the entry on medium-chain triglycerides explains.

On exercise, a meta-analysis of six randomised trials with 788 adults compared diet, aerobic exercise and the two together. Triglycerides fell in all three arms. Exercise alone lowered triglycerides but not total or LDL cholesterol, while diet, and especially diet with exercise, improved all three. None shows that a food or a habit cures a lipid disorder; they show the direction and rough size of the change to expect.

A worked example: counting a day's sugar

This is an illustration, not a real person. A 44-year-old bank cashier in Lucknow is told his triglycerides are flagged and is asked to return to his doctor in a month. He eats little fried food, so he counts sugar instead. Four cups of tea with two teaspoons each come to eight teaspoons, or 40 g. A 200 ml glass of sugarcane juice on the walk home adds 26 to 30 g. The day's total is 66 to 70 g, more than two and a half times the 25 g limit, before a single sweet.

He makes two changes. One teaspoon per cup across three cups gives 15 g, and plain water or buttermilk replaces the juice, so the day falls to 15 g. The arithmetic cannot say what his next report will show, because weight, rice portions, alcohol and genes all play a part. It does show where the largest source was hiding. Whether he needs anything beyond changes to food and activity is for his doctor to decide at the review.

Very high triglycerides: the risk to the pancreas and when to see a doctor at once

High triglycerides usually cause no symptoms, which is why they are found on a blood test. Very high levels are a different matter. The Institute states that levels above 500 mg/dL can raise the risk of acute pancreatitis, a sudden inflammation of the pancreas. The Endocrine Society's guideline treats levels above 1,000 mg/dL as a risk for pancreatitis, and the European statement asks laboratories to arrange separate referral above 880 mg/dL. A report in this range needs a doctor promptly.

These are the signs of severe pancreatitis listed by the US National Institute of Diabetes and Digestive and Kidney Diseases, which says that people with acute pancreatitis need to see a doctor right away. Do not try to manage them with diet. Medicines for triglycerides are prescribed and adjusted by a doctor; do not start, stop or change one because of anything read here. People with diabetes, thyroid, kidney or liver disease, or a close relative with very high triglycerides or pancreatitis, should have their lipid results reviewed by their doctor.

Common myths about triglycerides

A second myth is that a normal cholesterol result clears the whole report. In the INDIAB survey, isolated high triglycerides, meaning 150 mg/dL or more with total cholesterol under 200 mg/dL, affected 26.7 per cent of adults in Chandigarh and 15.4 per cent in Maharashtra. A third is that only overweight city dwellers are affected: more than a quarter of rural adults in the same survey had high triglycerides. The site's Indian diet chart for cholesterol and its fatty liver diet chart deal with related results.

Learning this properly

Blood lipids come up in NNWA's teaching as a boundary: something a coach should recognise on a report and refer onward. NNWA is a private skill academy in Kolkata, teaching online in English and Hindi. Its courses prepare people to coach healthy clients on food and habits and to refer medical cases; none is a degree or a dietitian qualification. The Diploma in Nutrition, Dietetics and Public Health covers fats and carbohydrates in depth, and Clinical Nutrition and Dietetics looks at diet alongside medical care.