Low-Carb Vs. Low-Fat: Which Diet Is Better For Losing Weight?

  • Low-Carb Vs. Low-Fat: Which Diet Is Better For Losing Weight?

Low-Carb Vs. Low-Fat: Which Diet Is Better For Losing Weight?

Rather than leave the results to chance, the researchers tested the participants for genetic differences that might influence whether their weight was associated with too many carbohydrates or too much fat.

Additionally, the scientists found that there were no significant diet-insulin or diet-genotype interactions.

After the second month, the researchers allowed both groups to progressively increase their carb or fat intake to a sustainable level.

After 12 months, the average macronutrient distributions for the HLF and HLC groups were 48% versus 30% for carbs, 21% versus 23% for protein, and 29% versus 45% for fat, respectively. Instead, they were advised to cook at home, snack less, eat with friends and family, avoid dining in front of the television, restrict their intake of sugar or refined grains, eat plenty of vegetables and choose whole foods when possible.

While metabolic and genomic testing aren't good indicators of how efficiently a body loses weight, the researchers warned that in the future, there might be new research that'll bring up better predictors of which diets work best for a person. The participants were initially instructed to reduce their total fat or carbohydrate intake to 20 g/day during the first 8 weeks of intervention, and then slowly added back either fat or carbs into their diet, not surpassing the lowest level of sustainable intake each participant could individually maintain. In the healthy low-carbohydrate diet group, 37.5% had the low-fat genotype and 31.9% had the low-carbohydrate genotype.

"What we do know is that some diets work better for some individuals than others, yet the factors that drive these inconsistencies remain unclear".

"One both sides, we heard from people who had lost the most weight that we had helped them change their relationship to food, and that now they were more thoughtful about how they ate". There was no calorie limit, just a focus on the types of foods they had to eat less of. There was still, however, vast weight loss variability among them - some dropped upward of 60 pounds, while others gained close to 15 or 20.

Study leader Professor Christopher Gardner said fizzy drinks, for example, may be low in fat but they are not healthy.

For decades, those striving to lose weight have faced a dilemma over whether it is better to cut the carbs or ditch the fat. Results are based on what they reported eating.

We asked: "Why is there this ongoing debate about the merits of low-carb and low-fat diets for weight loss?"

Many celebrities, including Kim Kardashian, Megan Fox and Mick Jagger, have found weight loss success by eating a low-carb, high-fat diet, dubbed the keto diet.

"This study closes the door on some questions - but it opens the door to others".

But that wasn't so: on average, participants lost the same amount of weight regardless of which type of diet they went on (somewhere around 5-6kg), and regardless of their particular genetics or insulin sensitivity. But the data didn't show any strong correlation between these signatures and weight loss on the corresponding plan, Gardner says.

The latest study made sure participants stuck to their diets so the results would be more accurate.

Dr. Walter Willett, chairman of the nutrition department at the Harvard T.H. Chan School of Public Health, said the study did not support a "precision medicine" approach to nutrition, but that future studies would be likely to look at many other genetic factors that could be significant.