High Cholesterol Causes: Why Indians Get It in Their 30sYoung blood, old numbers: what causes high cholesterol in Indians so early, and what actually helps.

296. That's the cholesterol number SILT's founder got back at 36. Not 56. Thirty-six. And in the same family, a sister had already been handed a diabetes diagnosis at 29. Two people, two decades younger than the textbook says they should be, holding reports that look like they belong to their parents.

If you've had that moment, the report, the number, the little voice going but I'm young, this one's for you.

Because here's the thing nobody says out loud at the diagnostic centre: you're not unlucky. You're not even unusual. You're on time. Just on a clock nobody told you about.

Heart attack at a young age: why Indians are early

A heart attack at a young age is less rare in South Asians than the textbook suggests: we tend to get heart disease and diabetes years ahead of schedule, mostly because the usual risk factors arrive sooner. Most health advice is written for a body that gets into trouble at 55. Ours don't wait that long.

A large international study compared about 12,500 people who'd had a first heart attack with people of the same age and sex who hadn't. South Asians had their first heart attack at 53 on average. Everyone else: nearly 59. Six years earlier. The same everyday risk factors (smoking, blood fats, belly fat, blood pressure, diabetes, stress, inactivity) largely explained it. South Asians simply had more of them before 60.¹ We collect them younger.

Diabetes runs a similar script. South Asians get type 2 diabetes at a body weight that would count as "normal" on a Western chart. One explanation researchers are testing: on average we carry less muscle, make less insulin in reserve, and tend to park fat in the liver and muscle, even when we look slim.² Doctors have a phrase for it: thin-fat. It is not a compliment.

And it's not a handful of people. ICMR-INDIAB, one of the largest health surveys of Indian adults, tested 113,043 people aged 20 and over across 31 states and union territories. It found 11.4% with diabetes (about one in nine) and 15.3% with prediabetes (about one in seven). Among those who had a full lipid test, 81.2% had at least one blood-fat number out of range.³

You're not old. You're early.

Causes of high cholesterol: thin-fat bodies and desk jobs

The most common causes of high cholesterol are lifestyle (what you eat, how little you move, smoking, heavy drinking) and genes, including an inherited form called familial hypercholesterolaemia; conditions such as diabetes and some medicines can push it up too.⁴ For Indians, the genes and the lifestyle tend to stack up early.

Three things, stacked on top of each other.

• One: the body we inherited. Researchers think generations of lean times may have left South Asians with less muscle and smaller insulin reserves. Drop that body into a world of desk jobs and doorstep delivery and the spare fuel has fewer places to go, so more of it ends up as fat in the liver and muscle.²
• Two: the chair. In India, about half of adults (49%) didn't meet the basic activity guideline in 2022 (150 minutes of moderate activity a week), more than double the 22% of 2000, according to WHO estimates built from population surveys.^5,6 Not because we're lazy. Because the job is the chair, the commute is the seat, and the evening is the sofa.
• Three: the day. Dinner at ten. Sleep at one. Chai and biscuits at four because lunch was a meeting. None of it feels like a health decision. All of it is.

Genes load the gun. The day pulls the trigger. And the day is the part we can change.

Cholesterol, LDL and HbA1c normal range

The normal range for cholesterol, LDL and HbA1c is in the table below, next to the borderline and out-of-range bands. Two numbers do most of the talking on your report; quick translation, no jargon:

• Cholesterol is fat in the blood. HDL is the kind you want more of. LDL is the kind that builds up in artery walls. A total of 296 is well past the line standard guidelines call high,⁷ but it's also one of the most fixable numbers on the sheet.
• HbA1c is your average blood sugar over the past two to three months, in one number. The middle band is prediabetes, the warning light; a result in the diabetes range is usually confirmed with a second test.⁸
• Prediabetes isn't diabetes. It's a fork in the road. Which is the whole point of the section after next.

Cut-offs: US cholesterol guideline (ATP III) and American Diabetes Association.^7,8 A translation, not a verdict: your doctor reads it with the rest of your results.

High LDL cholesterol in your 30s: is it dangerous?

High LDL cholesterol in your 30s isn't an emergency, but it isn't nothing either: the damage it does to arteries builds up quietly over years.

That's why your 30s matter. In a US study that followed young adults for decades, people with high LDL in their teens and twenties had more heart disease by middle age, and some of that extra risk stayed even after they brought their LDL down later.⁹ Arteries keep score. The earlier you find the number, the fewer years it has to work on them.

Very high LDL in a young, slim person can point to familial hypercholesterolaemia, an inherited condition that runs in families, causes very high cholesterol and raises the risk of heart disease at a young age.¹⁰ If your LDL is in the very high band, or a parent had a heart attack young, ask your doctor whether this needs checking.

High cholesterol symptoms: usually none

High cholesterol usually has no symptoms at all, so most people feel completely fine and only find out from a routine lipid profile. The only way to know your numbers is a blood test.⁴ In familial hypercholesterolaemia, very high cholesterol can sometimes leave deposits in tendons and other tissues,¹⁰ but don't wait for a sign you can see.

How to lower cholesterol: the boring stuff that works

How to lower cholesterol, in one line: heart-healthy food, weight and exercise first, and if that isn't enough, your doctor may add a medicine such as a statin, alongside the lifestyle changes, not instead of them.⁴

There's no hack. But there is proof.

Researchers in Chennai took 531 Indians with impaired glucose tolerance, a kind of prediabetes picked up on a glucose-tolerance test, and split them into four groups. One group got nothing fancy, just advice on eating better and moving more. After three years, 39% of them had developed diabetes, against 55% of the control group: a 28.5% lower risk.¹¹ A metformin group did about as well, and doing both added nothing extra. Not a detox. A walk.

That's the play:

• Move, badly, often. Thirty minutes, five days a week, of anything that makes you slightly out of breath gets you to the 150-minute guideline.⁵ Stairs count. Walking meetings count. The gym is optional.
• Fibre first. Dal, sabzi, salad, before the rice and roti, not after. In a small pilot study of 11 adults with type 2 diabetes, eating vegetables and protein before the carbs gave a much smaller sugar spike after the meal than the reverse order.¹² Small study, free experiment. Soluble fibre helps on the LDL side too: in a meta-analysis of 28 trials, a median of about 10 g of psyllium a day lowered LDL cholesterol by 0.33 mmol/L on average, roughly 13 mg/dL.¹³ (More in our guide to the types of fibre.)
• Sleep like it's a deliverable. Seven hours or more, as sleep scientists recommend for adults.¹⁴ Same time. Phone in another room if it has to be.
• Get tested at 25, not 45. Ask for a lipid profile and an HbA1c; US guidance suggests a cholesterol check about every five years from 20.¹⁵ India's national programme aims to screen over-30s for diabetes and blood pressure, not cholesterol,¹⁶ so ask for the lipid profile yourself. Family history of diabetes or early heart disease? Go earlier.
• Medicine is not failure. If your doctor suggests a statin, that's not you losing. That's you using every tool on the table. Do both, and let your doctor decide the medicine.

Why we're building SILT

Most wellness brands are built for someone who is 24, already fit, and has time to blend things. We're building for the person who sits ten hours a day, eats dinner at ten, and just got a report that says 296.

Let's be clear about what SILT is not. It isn't a cholesterol product or a blood-sugar product, and it won't change your lipid report or your HbA1c. The walk, the plate, the sleep and your doctor do that work.

What we make is the boring stuff done properly: the SILT Combo pairs a Mornings mix for daily energy and nutrition with a Nights mix for sleep and recovery, with every dose printed on the label, no proprietary blends, no added sugar and nothing that needs a blender. One thing you'll actually keep doing on a Tuesday, unlike the bottles in the pill graveyard (here's how to make a daily habit stick without an alarm).

If you saw that number and thought that's me: get the test. Then get moving. Then find us, we're building this for people like us. And if you have a medical condition or take medication, talk to your doctor before adding any supplement.

References

1. Joshi P, Islam S, Pais P, et al. Risk factors for early myocardial infarction in South Asians compared with individuals in other countries. JAMA. 2007;297(3):286–294. doi:10.1001/jama.297.3.286
2. Narayan KMV, Kanaya AM. Why are South Asians prone to type 2 diabetes? A hypothesis based on underexplored pathways. Diabetologia. 2020;63(6):1103–1109. doi:10.1007/s00125-020-05132-5
3. Anjana RM, Unnikrishnan R, Deepa M, et al. Metabolic non-communicable disease health report of India: the ICMR-INDIAB national cross-sectional study (ICMR-INDIAB-17). Lancet Diabetes & Endocrinology. 2023;11(7):474–489. doi:10.1016/S2213-8587(23)00119-5
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6. World Health Organization. Global Health Observatory: Prevalence of insufficient physical activity among adults aged 18+ years (age-standardized estimate), country estimates from Strain et al. 2024; India 2022: 49.4% (95% uncertainty interval 38.4 to 61.0), 2000: 22.3%. who.int
7. National Cholesterol Education Program. ATP III Guidelines At-A-Glance Quick Desk Reference. National Heart, Lung, and Blood Institute. nhlbi.nih.gov
8. American Diabetes Association. Diagnosis. diabetes.org
9. National Heart, Lung, and Blood Institute. High cholesterol in teens, early 20s leads to heart problems by middle age (2020). nhlbi.nih.gov
10. MedlinePlus Genetics. Familial hypercholesterolemia. US National Library of Medicine. medlineplus.gov
11. Ramachandran A, Snehalatha C, Mary S, Mukesh B, Bhaskar AD, Vijay V. The Indian Diabetes Prevention Programme shows that lifestyle modification and metformin prevent type 2 diabetes in Asian Indian subjects with impaired glucose tolerance (IDPP-1). Diabetologia. 2006;49(2):289–297. doi:10.1007/s00125-005-0097-z
12. Shukla AP, Iliescu RG, Thomas CE, Aronne LJ. Food order has a significant impact on postprandial glucose and insulin levels. Diabetes Care. 2015;38(7):e98–e99. doi:10.2337/dc15-0429
13. Jovanovski E, Yashpal S, Komishon A, et al. Effect of psyllium (Plantago ovata) fiber on LDL cholesterol and alternative lipid targets, non-HDL cholesterol and apolipoprotein B: a systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr. 2018;108(5):922–932. doi:10.1093/ajcn/nqy115
14. Watson NF, Badr MS, Belenky G, et al. Recommended amount of sleep for a healthy adult: a joint consensus statement of the American Academy of Sleep Medicine and Sleep Research Society. J Clin Sleep Med. 2015;11(6):591–592. doi:10.5664/jcsm.4758
15. MedlinePlus. Cholesterol levels: what you need to know. US National Library of Medicine. medlineplus.gov
16. Swasticharan L. India's fight against hypertension: get your numbers right. J Family Med Prim Care. 2022;11(9):5720–5721. doi:10.4103/jfmpc.jfmpc_175_22