India, Feb. 16 -- Alcohol affects everyone differently. While some people can sip through multiple drinks without much effect, others may feel flushed, dizzy or uncomfortable after just one glass. The reasons go far beyond tolerance or habit. Dr Harsh Vyas, a preventive and diagnostic radiologist based in Vadodara, Gujarat, explained in his February 7 Instagram post the genetic and lifestyle differences that may contribute to why many Europeans appear to handle alcohol more comfortably than Indians. (Also read: UK nutritionist explains how just '1 minute' of intense exercise may cut heart disease risk by 40% )

In a video, Dr Harsh Vyas compared liver ultrasound reports of two 37-year-old men, one Italian and one Indian. What stood out wa...