Malnutrition is becoming the “new normal” as rising rates of obesity across the world coincide with persistent undernutrition in many poorer countries, according to a major study released Tuesday. The Global Nutrition Report says the number of people who are obese or overweight is rising almost everywhere, fuelling an increase in diabetes and other diseases. Malnutrition covers a range of problems — from deficiencies in important vitamins and minerals for the undernourished to excessive levels of sugar, salt, fat or cholesterol in the blood for the obese.