The hottest Dietary Guidelines Substack posts right now

And their main takeaways
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Top Health & Wellness Topics

Butter Is Not Back: The Broken Promise on Saturated Fats

Unsettled Science • 2107 implied HN points • 06 Jan 26
🏥 Health Politics Dietary Guidelines
  1. Despite months of promises to stop demonizing saturated fat, the updated U.S. Dietary Guidelines still keep a 10% cap on saturated fat.
  2. Keeping that cap makes the new guidelines internally contradictory and undermines the earlier pledge to change course.
  3. The release was delayed, the final guidelines are much shorter (about eight pages) than past editions, and they will be unveiled at an invite-only HHS event.

What’s new in the 2025–2030 Dietary Guidelines and why it matters (or doesn't)

Your Local Epidemiologist • 983 implied HN points • 11 Feb 26
🏥 Health Politics Dietary Guidelines
  1. The new guidelines were produced through a faster, less transparent process that replaced the usual independent scientific review, raising concerns about credibility and how evidence was selected.
  2. The nutrition messaging shifted — stressing “real food,” increasing emphasis on protein, reframing some saturated fats, and tightening sugar limits — which could oversimplify complex food issues and stigmatize people who rely on processed foods.
  3. Because federal programs like school meals and WIC must follow the guidelines, these changes will require more funding, staff, and kitchen capacity and could worsen inequities, while the more political tone may make the guidance harder to trust and use.

Big Food Is Killing Our Children

Common Sense with Bari Weiss • 524 implied HN points • 10 Feb 26
🏥 Health Politics Dietary Guidelines
  1. Big Food and government-backed policies have prioritized profit over kids' health, pushing unhealthy foods that contribute to rising childhood obesity.
  2. The problem is large and growing: obesity rates in children have nearly quadrupled since the 1970s, about 36% of kids are overweight or obese, and roughly one in four teenagers now has type 2 diabetes or prediabetes.
  3. Even though the U.S. spends more on health care than any country, Americans are getting sicker with falling life expectancy and more chronic disease, and many parents no longer trust public health experts, fueling calls for change.

Major NIH Nutrition Trials on Diet & Health Ignored

Unsettled Science • 1738 implied HN points • 11 Jul 25
🏥 Health Politics Dietary Guidelines
  1. Many important nutrition trials conducted by the NIH have been ignored when creating US Dietary Guidelines. This is concerning, as these studies were large and lasted several years.
  2. The results showed that low-fat diets and reducing saturated fats did not prevent major health issues like heart disease or cancer. In fact, some trials indicated that these diets might even increase health risks.
  3. The current nutritional guidelines still promote these low-fat recommendations, despite a wealth of evidence against them. There's a call for the NIH to stop funding studies emphasizing low-fat diets and saturated fat restrictions.

What are ultra-processed foods, really?

Your Local Epidemiologist • 1591 implied HN points • 28 May 25
🏥 Health & Wellness Dietary Guidelines
  1. Ultra-processed foods (UPFs) can be convenient and affordable, but they are often linked to health issues like obesity and heart disease. It's important to know that not all processed foods are bad; some can actually be nutritious.
  2. Research shows that diets high in UPFs may lead to overeating and poorer health, but the exact reasons for this aren't fully understood yet. The type of UPF matters, with sugary drinks and processed meats being the most harmful.
  3. To eat healthier, you can look for foods with lower added sugars and sodium, while being mindful of marketing claims. Sometimes, it’s okay to include UPFs in your diet, especially when they meet your specific needs.
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A Closer Look at the 2026 U.S. Food Guidelines

Experimental Fat Loss • 77 implied HN points • 11 Jan 26
🏥 Health Politics Dietary Guidelines
  1. The 2026 U.S. dietary guidelines emphasize "eat real food" and cut back on ultra-processed foods. They stop demonizing saturated fat and explicitly include full-fat dairy and traditional fats like butter and tallow.
  2. The guidelines push prioritizing protein (about 1.2–1.6 g/kg), which will likely nudge people from processed, seed‑oil‑heavy foods toward more meat and dairy and may help population health, though some individuals do better with lower protein.
  3. Because government guidance shapes hospital, school, military, and packaged food choices, this shift could meaningfully reduce seed oil use and change what Americans actually eat, making the institutional impact as important as the individual advice.

US Dietary Guidelines Remain an Evidence-Free Zone

Unsettled Science • 1255 implied HN points • 11 Dec 24
🏥 Health Politics Dietary Guidelines
  1. Many clinical trials show that the recommended dietary changes may not actually improve health. In fact, some guidelines might worsen our health.
  2. The expert committee ignored strong evidence for reducing ultra-processed foods while pushing for less evidence-based recommendations on meat and dairy.
  3. Conflicts of interest within the expert committee raise questions about the validity of the guidelines, suggesting that politics may influence dietary recommendations over solid science.

US Dietary Guidelines: Science is "Subpar," Cannot be Replicated

Unsettled Science • 948 implied HN points • 27 Jan 25
🏥 Health Politics Dietary Guidelines
  1. The U.S. Dietary Guidelines are based on low-quality science that is hard to replicate. This raises questions about their reliability for healthy eating.
  2. A new study found serious flaws in how the USDA reviews the research for these guidelines, including mistakes in their search strategies and lack of transparency.
  3. Despite criticism and calls for improvement, the USDA has not made the necessary updates to ensure the guidelines are trustworthy and based on solid research.

Op-ed on the US Dietary Guidelines: the problems and how to fix them

Unsettled Science • 1158 implied HN points • 22 Nov 24
🏥 Health & Wellness Dietary Guidelines
  1. The US Dietary Guidelines have some serious flaws that need addressing. Many people think these guidelines aren't based on solid science.
  2. Experts are suggesting changes to improve the guidelines. They believe the rules should be more flexible and better reflect current nutrition research.
  3. There's a call for a broader discussion on diet recommendations. It’s important for everyone to have a say in what healthy eating looks like.

Nutrition & Health News This Week

Unsettled Science • 772 implied HN points • 15 Mar 24
🏥 Health & Wellness Dietary Guidelines
  1. Harvard longevity expert David Sinclair faced challenges in his career due to questions about the science behind his longevity claims for resveratrol, affecting his reputation and leading to his resignation.
  2. Recent dietary guidelines in Germany emphasizing less meat and dairy in favor of grains and vegetables have raised concerns among experts, including questioning the soundness of these plant-based recommendations.
  3. A study using data from the influential Nurses Health Study at Harvard School of Public Health revealed that even those who followed U.S. dietary guidelines on fat consumption still gained weight, shedding doubt on the effectiveness of these dietary recommendations.

The Real Villain Behind America's Obesity: Seed Oils

Who is Robert Malone • 22 implied HN points • 15 Jan 25
🏥 Health & Wellness Dietary Guidelines
  1. Seed oils are linked to obesity because they might harm thyroid function and slow down metabolism. This means they can make it harder for people to maintain a healthy weight.
  2. Unlike sugar, which is often blamed for weight gain, research shows that high consumption of seed oils could be driving people to store more fat, almost like hibernation mode.
  3. It's important to be aware of what we eat; cooking with traditional fats like butter or coconut oil instead of seed oils could help improve health and combat obesity.

The Hidden Link Between Seed Oils and America's Fentanyl Crisis

Who is Robert Malone • 25 implied HN points • 04 Dec 24
🏥 Health & Wellness Dietary Guidelines
  1. Seed oils, like soybean and sunflower oil, may lead to inflammation and worsening chronic pain because they are high in omega-6 fatty acids.
  2. Eating a lot of seed oils can create an imbalance with omega-3 fatty acids, which is important for keeping inflammation in check.
  3. Shifting towards whole, minimally processed foods and healthier fats could help reduce pain and dependence on painkillers like opioids.