Latest nail in the low fat con coffin was published in The Lancet today. Most important takeaway from this large study is that those who ate the least fat had higher rates of mortality, and higher saturated fat intake was associated with lower stroke events.
NZ grassfed Butter is buy 2 get 1 free at PnS. Enjoy the guilt free gently-fried in butter egg for breakfast and ditch the killer cereals.
http://www.thelancet.com/journals/la...252-3/fulltextHigh carbohydrate intake was associated with higher risk of total mortality, whereas total fat and individual types of fat were related to lower total mortality. Total fat and types of fat were not associated with cardiovascular disease, myocardial infarction, or cardiovascular disease mortality, whereas saturated fat had an inverse association with stroke. Global dietary guidelines should be reconsidered in light of these findings.
Factors contributing to weight loss on a ketogenic diet:
- excess ketones in the body leads to production of acetone which is excreted in the urine and exhaled air (ketone breath). This is a waste of metabolic fuel.
- high level of protein in the diet increases the rate of protein turnover which results in the increased utilisation of energy.
- high protein intake increases satiety.
- there is a considerable level of gluconeogenesis in order to provide necessary glucose for the body's needs. This process is energy expensive.
Reference: Introduction to Nutrition and Metabolism, Fourth Edition, by David A. Bender, pages 145 and 221.
I think the media loves the controversy of that study
Nutrition Wonk | Nutrition Science
Diet And Health: Puzzling Past Paradox To PURE Understanding | HuffPost
But I think the medical/health/nutrition industry is not.
I find the study is poorly conducted:
- The study is done through FFQ (Food Frequency Questionnaire), i.e. self reported energy intake, which makes it a low level of evidence study
- While the study specify the fat categories, the carbs are all put together as one. And in this study, fruit and legumes are put under carbohydrate together with the refined carbs, i.e. the bad carbs
- The study gathers info from 3 high income countries, 11 middle income countries, and 4 low income countries. The result is divided into quintile (5 equal groups) and it compares the lowest quintile to the highest quintile. Which means the data is also affected by the socioeconomic factor. Being poor can increase your mortality rate by 3x, or another way of seeing it, the subjects from the high income country might have health issues but they avoid mortality due to better health care and better living condition.
So the socioeconomic adjustment allow the study to show that saturated fat lowers the mortality rate in richer country.
- This one should be stated under the title of the study: Funding. It has unrestricted grant from several pharmaceutical company, including the company that produces Statin, which is a lipid-lowering medication.
You can give it a try following the study's recommendation and see how it goes. But judging from who's funding the study, I won't trust the findings and I'll stick to my fruit and veggies for now.
But I can't get onboard with the 'fat but healthy' mantra as presented in the Huff Post piece. It completely ignores the role of chronic, systemic inflammation coming from adipose fat cells and the complexity of the hormonal regulatory systems in controlling ageing. Here is another meta anaylsis that looked at all-cause deaths and found 'our analyses showed that obese individuals have an increased risk for death and CV events over the long-term regardless of metabolic status'. https://www.ncbi.nlm.nih.gov/pubmed/24297192
One of the most widely cited nutrition researchers has been found to have been essentially fabricating his conclusions for over a decade. Lots of everyday dieting ideas have been based on his work.