A total diet replacement programme helped obese people lose weight and keep weight off
A programme of weekly behavioural support with total diet replacement led to over 7kg greater weight loss than usual care in primary care. This weight loss was maintained for a year after starting the 8-12 week low calorie programme.
This trial, funded by NIHR and a commercial sponsor, was carried out in ten primary care practices in Oxfordshire. Participants had BMI over 30. It referred half of the 278 participants to a commercial weight loss programme, free of charge for six months. The rest ...
Diet and exercise can reduce the risk of developing diabetes during pregnancy
Diet and exercise are effective ways of preventing the development of diabetes during pregnancy, known as gestational diabetes.
Gestational diabetes is becoming more common and is associated with poorer outcomes for mother and baby. Diet, physical activity and weight are modifiable risk factors, but trials published to date have shown inconsistent results.
This systematic review pooled 47 trials and found that any form of lifestyle intervention reduced the risk of gestational diabetes by 23%, ...
Fish oil supplements do not reduce cardiovascular deaths in people with diabetes without existing vascular disease
Omega-3 fatty acid supplements make no difference to cardiovascular outcomes in people with diabetes but without established cardiovascular disease. Serious vascular events like heart attack, stroke or deaths from these occurred in about 10% of people regardless of whether they took daily omega-3 or placebo capsules for seven years.
The ASCEND studyis a large UK trial assessing primary cardiovascular prevention for people with any type of diabetes. A companion publication assesses the use of as...
Omega-3 supplements do not prevent heart disease, stroke or death
Omega-3 fatty acid supplements from fish oils or plants have little or no effect on the risk of heart disease, stroke or overall death rates. This finding contradicts a widespread belief that omega-3 supplements are protective. Previous evidence in favour of omega-3 supplements is mainly derived from trials at high risk of bias. The better evidence identified in this review does not demonstrate any health benefit.
The review provides robust evidence confirming current guidance that omega-3 supp...
A football programme for overweight men achieves sustained weight loss
A 12-week weight management programme for men, centred on football, achieved 4.9kg weight loss at 12 months. Modest weight loss of 2.9kg was maintained at 3.5 years.
Rates of overweight and obesity are higher for men than women in the UK, and there is little evidence that interventions are effective in the longer term. This NIHR-funded study followed 488 of 747 men (65%), average age 47 years, originally allocated to a programme of behavioural advice and football training with a professional co...
Fish oil supplements are ineffective for treating dry eyes
Omega-3 fatty acids or ‘fish oil’ supplements are no more effective than inactive olive oil capsules for relieving dry eye disease. Some patients take fish oil supplements for this common problem, but this new evidence suggests that they consider alternatives.
Dry eye disease is a common long-term inflammatory condition causing discomfort, and disturbances including blurred vision. Treatment of symptoms includes using artificial tears. Although guidelines recognise the lack of exist...
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 clinically important.
In this systematic review on the group weight loss approach, participants in the 47 trials were adults from the general pop...
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 approaches and fad diets that people try. Dietary trials tend to observe only modest weight loss. Given wide population variation, some suggest that knowing the genetic or metabolic c...
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 physical activity a day and deliver cookery workshops with parents each term. It also included activities with a local football ...
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 hospital, but patients may not enjoy consuming oral nutritional supplement drinks. This finding supports the Government’s strategy f...