Should I try the low-carbohydrate diet?

The low-carbohydrate diet is considered an effective tool for managing weight, stabilizing energy, and reducing triglycerides, particularly for sedentary individuals or those with obesity or diabetes.

However, experts also highlight potential issues such as electrolyte imbalances, hormonal changes, and the need for careful monitoring of lipid profiles, especially with long-term adherence.

Some experts suggest that rotating complex starches or including carbohydrates from sources like fruit and honey can be beneficial after achieving metabolic flexibility or for long-term well-being.

For individuals who are obese or diabetic, limiting carbohydrates to 120 to 170 grams per day may be appropriate, and achieving good body composition on ketogenic or low-carb diets requires higher protein intake than traditional ketogenic ratios. Electrolyte supplements like LMNT can be a good adjuvant, and increasing sodium intake can improve cognitive and physical function for many individuals, especially those on low-carbohydrate diets.

• 01Rhonda Patrick noted that electrolyte supplements like LMNT can be a good adjuvant to a low-carb or ketogenic diet.
• 02Paul Saladino suggested that rotating complex starches after a period of ketosis can be beneficial once metabolic flexibility is achieved.
• 03Andrew Huberman stated that increasing sodium intake can improve cognitive and physical function for many individuals, especially those on low-carbohydrate diets.
• 04Peter Attia and Paul Saladino observed that individuals on low-carb diets typically have Lp(a)-PLA2 levels around 200-250, which is not associated with significant increased risk of high Lp(a).
• 05Paul Saladino mentioned a crowdfunded study investigating lean mass hyper-responders, aiming to recruit 100 individuals with specific lipid profiles and assess their cardiovascular system.
• 06Paul Saladino indicated that adding carbohydrates to the diet may improve sleep in some individuals on low-carb diets by reducing sympathetic nervous system activity and stress hormones.
• 07Paul Saladino suggested that for individuals who are obese or diabetic, limiting carbohydrates to 120 to 170 grams per day may be appropriate.
• 08Paul Saladino claimed that a low-carb, ketogenic, healthy fat diet can improve well-being, GI symptoms, emotions, psychiatric health, sleep, body composition, and libido.
• 09Peter Attia and Rhonda Patrick agreed that carbohydrate restriction is an effective dietary tool for reducing triglycerides.
• 10Andrew Huberman noted that high fat, low carbohydrate nutrition strategies are effective for weight management and energy stabilization, particularly for sedentary individuals.
• 11Paul Saladino stated that achieving good body composition on ketogenic or low-carb diets requires higher protein intake than traditional ketogenic ratios.
• 12Peter Attia observed that high fat oxidation rates in individuals on very low-carbohydrate diets are likely artifacts of gas exchange measurement, as demonstrated by a significant reduction in fat oxidation within three days of dietary change.
• 13Rhonda Patrick found that in humans consuming a low-carbohydrate diet, circulating saturated fat levels are significantly lower despite higher dietary intake compared to high-carbohydrate diets.
• 14Paul Saladino noted that individuals who have followed ketogenic diets for extended periods (five years or more) can become carb-sensitive, experiencing weight gain and feeling unwell when reintroducing carbohydrates.

Peter Attia cited a study suggesting low carbohydrate diets are unsafe and should be avoided. Paul Saladino advised pregnant women undergoing a glucose tolerance test to avoid low-carbohydrate meals the night before, and cautioned that drastic carbohydrate reduction can be problematic for breastfeeding mothers. Paul Saladino also noted that long-term ketogenic diets can lead to electrolyte and hormone issues, and that consuming under 50 grams of carbs per day for up to 90 days can lead to a loss of strength, energy, and fullness. Rhonda Patrick and Paul Saladino raised concerns about elevated apob and ldlc levels on a low-carb, high-fat diet, even in insulin-sensitive individuals. Paul Saladino warned that a zero-carbohydrate diet for an extended period can increase inflammation and liver burden, and that consistently elevated cortisol levels due to carbohydrate limitation are likely detrimental for many humans long-term. Peter Attia suggested that low-carbohydrate or no-carbohydrate diets have very little evidence of actual benefit and are not practical for most people. Andrew Huberman noted that the long-term impact of very low-carbohydrate diets on pancreatic islet cells is unknown and may lead to atrophy, and Paul Saladino expressed uncertainty about long-term lipid levels increasing pathologically in individuals cutting off glucose supply.

The verdict could change with further research clarifying the long-term impacts of very low-carbohydrate diets on pancreatic islet cells and lipid levels, especially in individuals cutting off glucose supply. Additionally, more evidence on the safety and practicality of these diets for a broader population, beyond specific conditions like obesity or diabetes, would be influential. Studies that definitively address the concerns about electrolyte and hormone issues, as well as the potential for increased inflammation and liver burden with extended zero-carbohydrate intake, would also be critical.