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Omega 3 Fish Oil for Weight Loss

by Cindy Gray

We are conditioned to think that all fat is bad, especially if we are trying to lose weight. Low-fat diets have been promoted for decades as the only way to shed body fat, but now it seems that is not entirely true. A recent study by the University of South Australian found that there are definite benefits of omega 3 fish oil for weight loss when taken in conjunction with regular exercise.

Studies show the benefits of omega 3 fish oil weight loss

Study on the Weight Loss Benefits of Omega-3 Fish Oil

The Australian study focused on 75 participants who were diagnosed as overweight (>25 BMI) or obese (>30 BMI) with other risk factors for metabolic syndrome. These increased risk factors included high cholesterol, elevated triglycerides, hypertension and/or heightened insulin levels.

The group was divided into four different categories and each group was given either:

  • Tuna fish oil supplements (omega-3) with no exercise
  • Tuna fish oil supplements (omega-3) with exercise
  • Sunflower oil supplements (no omega-3) with no exercise
  • Sunflower oil supplements (no omega-3) with exercise

The supplements were 6 x 100 mg capsules of omega-3 fish oil or sunflower oil. The participants who included exercise in their program also completed three 45-minute runs each week at 75% of their maximum heart rate. No dietary changes were made to any of the participants’ routine.

After three weeks, members of three of the groups remained the same weight.  However, the group taking tuna fish oil supplements combined with exercise showed an average weight loss of 4.5 pounds, and a marked decrease in percentage body fat. This clearly showed the benefits of omega 3 fish oil for weight loss when combined with regular exercise.

The study concluded that if the fish oil supplements and exercise regimen were adopted by someone who was also on a calorie-controlled diet, the weight loss could be even more substantial.

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How Does Omega-3 Fish Oil Benefit Weight Loss?

Omega-3 is known to improve blood flow to the muscles during exercise. It also helps trigger enzymes involved in burning or oxidizing fat when the metabolic rate increases during exercise. The combination of omega-3 and exercise prompts the body to carry fat to where the muscles can burn it as energy, thereby lowering body fat stores.

The study participants also underwent DEXA body scans which distinguish between fat, muscle and bone. Although three groups of participants remained unchanged, the group taking omega-3 with exercise showed a significant reduction of belly fat.

Those who took omega-3 fish oil without exercise still benefitted, as their blood pressure decreased during the study and there was a beneficial effect on their heart rate and triglyceride levels.

These encouraging results showing the benefits of omega 3 fish oil weight loss will now be followed up with other studies by Professor Howe, Director of the Australian Technology Network for Metabolic Fitness. In the meantime, dieters have nothing to lose but fat if they add 600 mg omega-3 fish oil and regular exercise to their weight loss plan. 

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