The back of your neck can tell you something about your blood sugar before a lab report does. It is one of the few places the body posts an early notice where you can actually see it.
What to look for
Look at the back of your neck in a mirror. A darker, velvety patch that does not wash off however hard you scrub is not dirt and not sun. It is called acanthosis nigricans, and it is one of the earliest visible signs of insulin resistance.
Skin tags around the neck and underarms often appear alongside it. Individually these are small things, easy to dismiss. Together they point in the same direction.
The scale of the problem in India
According to a 2023 report, 101 million Indians are living with diabetes, and a further 136 million are prediabetic. That second number is the one worth sitting with: it describes people whose bodies have already started changing, mostly without knowing.
Insulin resistance typically builds for years before blood sugar crosses the diabetes threshold. Which means an HbA1c can read "normal" while the underlying process is well underway.
We treat health like an exam
The common pattern is to wait for the report, then react to the result. But the body sends notes much earlier than the laboratory does — on the skin, around the neck, at the waistline, in the shirt size that quietly went up.
"But I'm not even overweight"
This is weak comfort in an Indian context. Indians tend to develop metabolic problems at lower BMI, with fat distributed around the belly and the organs rather than spread across the body. A normal reading on a weighing scale tells you very little about what is happening around your liver.
This is why waist measurement and visible signs are often more informative than weight alone, and why "slim" is not the same as "metabolically healthy".
The early window
This is part of why I have been building Biosash Business Pvt. Ltd. around sea buckthorn. The berry has a long history of use in Himalayan and Ayurvedic practice, and early research suggests it may have a role in post-meal glucose and cholesterol. It is best understood as support during prevention — in the window where the body can still change direction — rather than as a treatment for an established condition.
If you can see any of the signs above, the useful next step is not a supplement. It is a fasting insulin test and a conversation with a doctor.