[amadsen]

A high carb, low fat diet is excellent for health. Especially when paired with other simple recommendations such as an active lifestyle. This is established since well over a century, supported by high quality research and recognized by the WHO as well as governments and NGOs across the globe.

[shijie]

You may by all means adhere to nutritional science that was concocted over a century ago. I’ll stick to current research completely debunking these claims. Thanks.

[scarface74]

True. And giving advice like the parent poster ignores reality that most people don’t have an “active lifestyle”. Giving any kind of advice that doesn’t take into account the reality on the ground is not good.

[DanBC]

Current research isn't debunking these claims.

[shijie]

Care to share any examples of current research that maintains a high carb low fat is in any way optimal?

As an (albeit) non-credentialed, but still deeply research and evidence-based nutritionist and health enthusiast, I can tell you that you’re deeply, exquisitely wrong. The link between high glycemic variability and almost every case of chronic disease is so well-established at this point that the only people that don’t know about it are the average layperson reading the news or fitness magazines for their nutrition advice, of which cohort you seem to have placed yourself.

As an Ironman athlete, I intake between 1-200 grams of carbs a day, but most of them rank very low on the glycemic index. Most high carb diets are replete with high glycemic grains, breads, and pastas that are not only oxidatively stressful on our guts and bodies, but deleterious to health in the long term.

Do your research.

[amadsen]

Here you go, buddy:

(WHO) Global Strategy on Diet, Physical Activity and Health (DPAS): - Not more than 30% of the total calories should come from fats. - Eat at least 400 grams of fruits and vegetables per day IN ADDITION to grains, potatoes and and other starchy roots.

(USDA) Nutrition Evidence Library. A series of systematic reviews on the relationship between dietary patterns and health outcomes. Alexandria, VA: U.S. Department of Agriculture, Center for Nutrition Policy and Promotion, March 2014. - "The major findings regarding sustainable diets were that a diet higher in plant-based foods, such as vegetables, fruits, whole grains, legumes, nuts, and seeds, and lower in calories and animal-based foods is more health promoting"

Harvard School of public health have a great summary of recommendations with sources at https://www.hsph.harvard.edu/nutritionsource/healthy-eating-... - 50% Vegetables & fruit - 25% grains - 25% protein - Fat in the form of plant oils, in moderation

"But there was a study..."

You see that's the thing with research: It's hard. And very easy to misrepresent with cherry picked data. That's why actual dieticians are required to undergo formal training to learn how to correctly interpret scientific results. And why guidelines are based on carefully conducted systematic reviews by subject matter experts like the above.

"But, but, Joe Rogan... and Dave Asprey... and Tawnee..."

I know. They're full of shit. Don't be scared of carbs.

"But I lost 20 kg on keto"

After the initial six months of reduced water retention, there is no advantage of low carb over low fat diets. Systematic reviews show that the field is plagued by publication bias on this topic with low quality meta analyses favoring low carb diets while high quality meta analyses don't find any difference. (e.g. Churuangsuk et al 2018, Obes Rev 19).

"But glycemic index..."

You seem a bit confused about what this is and what it is used for. If you are trying to say that sugar is bad then yes this is true to some extent, especially for sedentary people, but it depends a lot on the type of sugar consumed e.g. you'd be hard pressed to find a registered dietician recommending against eating sweet fruit which has a relatively low effect on insulin levels and comes packed with other good nutrients. Regardless, this does not preclude a healthy high carb diet.

Not that I'm under any illusion that you'll let systematic reviews by the world's most trusted institutions sway your opinion, but to anyone else reading: please do consult reputable sources for dietary guidelines and be wary of overblown claims from amateur "health enthusiasts".