Dark and velvety patches at the back of the neck or underarms do not always indicate poor hygiene. It is a medical condition called Acanthosis Nigricans, which, although harmless, can sometimes signal underlying health issues like insulin resistance, hormonal imbalances, or other metabolic conditions.
What Your Skin Is Telling You
On Sunday, January 11, Dr Sayajirao Gaikwad, specialising in homoeopathy, shed light on the matter. He posted an elaborate note on X, sharing details on the matter. He wrote, “Dark neck is not dirt. It is insulin resistance. Acanthosis Nigricans, the dark velvety skin on the neck or underarms, is not about poor hygiene. It is one of the clearest external signs of insulin resistance.”
Explaining why it happens, the doctor added, “When cells resist insulin, the body produces more of it. Excess insulin overstimulates skin cells and pigments, leading to thickened, darkened patches. This is not just cosmetic. It is an early red flag for prediabetes, type 2 diabetes, PCOS, fatty liver, and metabolic syndrome.”
Dark Neck Isn't Dirt
— Dr.Sayajirao Gaikwad (@DietDrsayajirao) January 11, 2026
It's Insulin Resistance
Acanthosis Nigricans, the dark velvety skin on the neck or underarms, isn't about poor hygiene.
It's one of the clearest external signs of insulin resistance.
When cells resist insulin, the body produces more of it.
Excess insulin… https://t.co/XPBlx7jQQA
How To Get Rid Of Dark Neck
According to Dr Gaikwad, “The solution is not scrubbing harder. It is lowering insulin through lifestyle. That ‘dark neck' is your metabolic warning light.” Here are the steps:
- A strict low-carb diet
- Higher protein and healthy fats
- Weight loss (even 5–10 per cent matters)
- Resistance training and proper sleep
Want to check insulin resistance?
— Dr.Sayajirao Gaikwad (@DietDrsayajirao) January 11, 2026
Tests that help :
~ Fasting glucose
~ HbA1c (3-month avg)
~ Fasting insulin → HOMA-IR
~ Lipid profile (↑TG, ↓HDL = ????
~ OGTT (sugar + insulin response)
Dark neck,belly fat,PCOS,fatty liver = clinical clues.
Want To Check Insulin Resistance? Tests That Help
A few tests that can help you check insulin resistance are,
- Fasting glucose
- HbA1c (3-month average)
- Fasting insulin → HOMA-IR
- Lipid profile (↑TG, ↓HDL = red flag
- OGTT (sugar + insulin response)
In conclusion, the doctor revealed that “dark neck, belly fat, PCOS and fatty liver” equals clinical clues.
Last year, Dr Gaikwad offered a dietary guide to “prevent and even reverse early diabetes” in a separate X-entry. These are as follows:
ICMR warns: India is facing a diabetes & obesity tsunami
— Dr.Sayajirao Gaikwad (@DietDrsayajirao) October 5, 2025
100M+ Indians have diabetes
136M+ have pre-diabetes
Obesity rising even in young adults
But it's NOT inevitable. You can prevent & even reverse early diabetes:
✅ Protein first:eggs/Fish/paneer legumes.
✅ Double… pic.twitter.com/BsDrXchntL
- Protein first: Eggs/fish/paneer legumes.
- Double veggies: fibre fights insulin resistance
- Move daily: 8-10k steps and strength training
- Cut sugar and refined carbs
- Sleep and manage stress
- Small daily actions > crash diets.
- Start today: one protein-rich meal and a 30-minute walk can change your numbers.
We often overlook minor skin issues, but they might indicate serious health concerns.
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