Two sets of US guidelines have revised the public health advice on physical activity to clarify that gentle exercise is not enough to improve health, The Guardian reported. Current guidelines suggest that 30 minutes of exercise a day is enough to offer health benefits, however the newspaper said that adults “need to add jogging and twice-weekly weight-training sessions if they want to cut their risk of heart disease and obesity.”
The newspaper reports that “the lightest of activities such as dusting and the stroll to the car are being counted as exercise” and quotes the researchers as saying that people have “not accepted, and others have misinterpreted the original recommendation.”
The expert panel process and the recommendations offered have clarified some of the more unclear recommendations that were published in 1995. The group of experts met in 2000 to prepare this update, and this was supplemented by panel members’ own searches of the literature. It is not possible to validate the strength of evidence behind this policy advice.
Being overweight may not be as unhealthy as it was 40 years ago," BBC News reports. New research has found a body mass index (BMI) of 27 is linked to the lowest rate of death – but someone with a BMI of 27 is currently classed as being overweight. BMI is a score calculated by dividing your weight (usually in kilograms) by the square of your height (usually in metres and centimetres). Currently, a BMI of 25 to 29.9 is classified as being overweight. Researchers looked at 120,528 people from Copenhagen, recruited from 1976 to 2013, and separately compared those recruited during the 1970s, 1990s and 2000s. They were followed up until they died, emigrated, or the study finished. The BMI linked to the lowest risk of having died from any cause was 23.7 in the 1970s group, 24.6 in the 1990s group, and had further risen to 27 in the 2003-13 group. It may be the case that the suggested upward shift in optimal BMI is the result of improvements in preventative treatments for weight-rela...