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Seniors get the good oil in weight loss study

Can antioxidants found in olive oil and certain fruit and vegetables enable older adults to avoid losing muscle mass when they go on prescribed weight-loss diets?

<p>A study is hoping to find out if antioxidants found in olive oil can help older adults to avoid losing muscle mass (Source: Shutterstock)</p>

A study is hoping to find out if antioxidants found in olive oil can help older adults to avoid losing muscle mass (Source: Shutterstock)

Research by the University of the Sunshine Coast (USC) is hoping to find
out if that is the case. Dozens of Sunshine Coast seniors have already
volunteered to take part in the study but more participants are still
being sought.

USC Lecturer in Nutrition and Dietetics Dr Anthony Villani says the
participants, who are all aged 60 or over and are either overweight or
obese, will be placed on a 12-week diet that contained aspects of the
highly regarded Mediterranean diet.

This includes 40-60ml of olive oil each day as well as a range of red, orange, yellow and leafy green fresh produce. 

Dr Villani says despite overweight people being at greater risk of
metabolic diseases like diabetes, health professionals often avoided
putting overweight older patients on energy-restricted diets due to
concerns about muscle mass loss.

“As you lose body weight, you will naturally lose some muscle. It is a natural physiological response,” he says.

“But muscle loss in older people, known as sarcopenia, can place them at a greater risk of falls, loss of independence and institutionalisation.

“We don’t know a lot about how nutrients, particularly antioxidants, could help prevent that muscle loss, so we’re testing out carotenoids and polyphenols in this study – and the Mediterranean diet is particularly rich in those two nutrients.”

Participants will visit the USC Health Clinic eight times throughout the study, so that researchers can test their body composition, muscle strength, walking speed and balance.

They will also receive a supply of olive oil and a fortnightly fruit and vegetable hamper to maintain their diet.

Dr Villani has been overwhelmed by the number of people applying to be part of the study and says: “I think as well as being attracted by the weight loss aspect of the study, a lot of community members genuinely want to contribute to this research.”

“If you’re overweight, you have an increased risk of metabolic disease. So it’s really important to know whether older adults can actually lose weight without negatively affecting their muscle mass and strength.

“It would give nutrition professionals more confidence in prescribing medically supervised weight loss programs to older adults, while making sure the diet is nutritionally adequate.”

Overweight adults over the age of 60 years who are otherwise healthy and who would like to take part in the study can contact Dr Villani at avillani@usc.edu.au.

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