New Delhi, Dec. 20 -- Many people complain that they feel unwell yet cannot find a clear medical cause. They feel tired throughout the day or dizzy at random moments. Some struggle with digestion or wake up exhausted despite long sleep.

Others notice rising irritability or poor focus. This strange state is often not a disease, yet it still affects daily life.

Doctors call this condition "sub-health". The person is not fully sick, but the body is still sending warning signs.

Science now links many of these subtle problems to chronic inflammation inside the body. It builds slowly and harms vital systems.

Acute inflammation behaves like a loud alarm while chronic inflammation acts like a quiet fire. It burns slowly without clear signs, y...