Britain's National Institute for Health and Care Excellence (NICE) has set stricter limits to measure obesity in British Asians.
The new guidance has been introduced due the fact that British Asians and other ethnic minorities are prone to diseases like diabetes, the institutes' advisers said.
The new targets mean a 5ft 11in (1.8m) Asian man should weigh below 11st 11lb (75kg).
And an Asian woman who is 5ft 3in (1.6m) should weigh less than 9st 4lb (59kg).
Up to now experts have recommended a Body Mass Index (BMI - weight divided it by height in meters) of 25 for all adults.
But NICE says that doesn't go far enough for certain ethnic groups.
Its new guidelines say Asian people should aim for a BMI lower than 23.
People from black and other minority groups would most likely also benefit from having a BMI less than 23, but should aim for a BMI at least lower than 25.
Excess body fat contributes to more than half of cases of type-2 diabetes and a fifth of heart disease cases as well as certain types of cancer.
The number of people affected by these health conditions is far greater among black, Asian and other minority ethnic groups - despite rates of obesity among these groups being similar to the white population.BLOG COMMENTS POWERED BY DISQUS