Visceral fat tends to get overshadowed by subcutaneous fat because the latter can be seen. However, visceral fat is far more deadly because it lies near organs such as the liver and intestines. An accumulation of fat therefore makes you uniquely vulnerable to life-threatening complications.
The subjects were randomly assigned the following treatment oil diets: conventional canola, high-oleic acid canola, high-oleic acid canola with DHA (a type of omega-3 fatty acid), corn/safflower and flax/safflower.
After each four-week diet period, participants were given a four-week break before starting the next diet period.
The participants consumed two smoothies during the day, which contained the specified treatment oil.
The quantity of oil was calculated based on the participant’s energy needs. For example, a participant who was on a 3,000-calorie diet would receive 60 grams of the treatment oil per day, providing 18 percent of his or her total dietary energy.
Each smoothie would then contain 100 grams of orange sherbet, 100 grams of non-fat milk, 100 grams of frozen unsweetened strawberries and 30 grams of canola oil.
The canola oil was carefully incorporated into the test diets so as to not exceed the participants’ daily calorie needs.
All of the participants had abdominal obesity, or increased waist circumference.
“As a general rule, you can’t target weight loss to specific body regions,” said Kris-Etherton.
“But monounsaturated fatty acids seem to specifically target abdominal fat.”
Monounsaturated fatty acids are a healthy type of fat.
“Replacing less healthy fats, such as saturated fats and trans fats, with unsaturated fats, such as monounsaturated fatty acids and polyunsaturated fats, may offer health benefits,” explains the Mayo Clinic.
In addition to canola oil, monounsaturated fatty acids can be found in:
- Olive oil
- Nuts, such as almonds, cashews, pecans and macadamias
- Nut butters
- Peanut oil.