Evidence
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Group-based diet and exercise programmes can lead to weight loss

The evidence is growing that group-based weight loss programmes can offer effective and acceptable options for overweight people, particularly men. On average, people in group dietary advice and exercise programmes lose 3.5kg more than non-participants by six months – a modest 4% weight loss overall but less than the 5% that is often regarded as ...

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Low fat or low carbohydrate diets seem just as effective for weight loss

Overweight to obese adults who followed a low fat or low carbohydrate diet for 12 months both lost around 5 or 6kg in body weight. It made no difference whether they had a gene-type indicating that they break down fats or carbohydrates better. Obesity is a major public health concern and there are many weight-loss ...

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A school-based obesity prevention programme was ineffective

A school-based healthy lifestyle programme delivered to 6-7-year-old children and their parents made no difference to children’s weight, diet or activity levels. Around 1 in 4 remained overweight or obese. The NIHR-funded year-long programme was delivered in 54 primary schools in one region of England. Teachers were trained to provide an additional 30 minutes of ...

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Enriched food and snacks can increase nutritional intake in older people in hospital

Enriching hospital food with energy or protein may improve nutrition in older people in hospital. Studies assessed in a systematic review showed consistent effects of enriched or fortified foods compared with usual nutrition. The extent of increased consumption varied depending on the amount and type of foods added. Malnutrition is common in older people in ...

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Hospital admission rates and costs increase in line with BMI

Each 2kg/m2 rise in body mass index (BMI) above the normal-weight threshold in women aged 55-79 leads to a 5% rise in annual hospital admissions and 7% rise in healthcare costs. In England, £662 million of the annual hospital admission costs in 2013 could be attributed to overweight or obesity in women of this age ...

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Diet and exercise programmes can prevent diabetes in high-risk individuals

Lifestyle changes can reduce the risk of diabetes by about 40% and overall prevents about four high-risk individuals in 100 developing type 2 diabetes each year. The risk remained low for an average of about seven years after the intervention, but effects did decline over time. Medications including the weight-loss drug orlistat and diabetes drug ...

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A school-based lifestyle intervention didn’t help children avoid unhealthy weight gain

The Healthy Lifestyle Programme delivered to 9-10-year-old school children did not reduce their weight over the course of two years. Around a third remained overweight or obese, the same as in schools that followed the standard syllabus. This trial, funded by the NIHR, assigned schools across Devon to follow a lifestyle programme in Year five. ...

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Type 2 diabetes can be reversed with a low-calorie diet

Nearly half of people given a formula replacement diet of 830 calories per day for three to five months, followed by food reintroduction, went into remission from type 2 diabetes. They were supported to achieve and maintain weight reduction by primary care nurses or dieticians. This trial involved 298 adults who had been diagnosed with ...

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Takeaways linked to increased cardiovascular risk factors and obesity in children

Children who eat takeaways once or more each week have more body fat and higher low-density lipoprotein (LDL) “bad” cholesterol levels than those who never or hardly ever eat them. Their diets were also higher in fat and lower in protein and calcium. This cross-sectional study looked in depth at eating habits and risk markers ...

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Being overweight or having diabetes are both linked to cancer

For western high-income countries such as the UK, an estimated 15% to 16% of cancers could be avoided by preventing diabetes, obesity or excess weight (defined as a Body Mass Index [BMI] greater than 25). A high BMI was responsible for almost twice as many cancers as diabetes. Around 5.6% of cancers globally in 2012 ...

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