The Field Journal

Notes From the Trailhead

Deep dives on animal-based nutrition, hormones, training, and eating like your great-grandfather.

Feb 22, 2026

Beef Organ Supplements: The Complete Guide to Nose-to-Tail Nutrition

Beef organ supplements pack the nutritional density of liver, heart, kidney, and spleen into capsules — delivering a broad-spectrum nutrient profile that no single-organ supplement or multivitamin can match. Each...

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Feb 22, 2026

Collagen Types Explained: What Types I, II, and III Mean

Scientists have identified 28 collagen types. Types I, II, and III account for much of the supplement conversation because they are common in skin, bone, cartilage, and other connective tissues....

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Feb 22, 2026

Bone Broth Collagen Benefits: What Human Studies Support

The strongest human evidence for collagen concerns osteoarthritis symptoms, where meta-analyses report modest improvements across varied collagen derivatives. Evidence for skin is disputed, bone findings come from specific peptide trials,...

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Feb 22, 2026

Clean Protein Powder Ingredients: A Practical Label Guide

“Clean protein” has no single FDA definition, so the front-label claim cannot make the decision for you. A useful clean protein powder guide checks the protein source, amount per serving,...

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Feb 22, 2026

Keto Protein Powder: How to Choose a Low-Carb Option

A keto protein powder is one that fits your personal carbohydrate target while helping you meet your protein needs. Beef protein isolate, egg white protein, whey isolate, some plant isolates,...

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Feb 22, 2026

Protein Powder and Inflammation: What Research Shows

Protein powder doesn't inherently cause inflammation. But the ingredients in most protein powders do. Dairy triggers inflammation in the 68% of adults who can't properly digest lactose. Artificial sweeteners disrupt...

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Feb 22, 2026

AIP Protein Powder: What's Safe for the Autoimmune Protocol

Most protein powders fail the autoimmune protocol before you even open the lid. Whey and casein are dairy. Pea and soy are legumes. Rice protein is a grain. And nearly...

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Feb 22, 2026

Carnivore Diet Supplements: The Complete Guide

The carnivore diet — eating exclusively animal products — provides complete protein, abundant B12, heme iron, zinc, and fat-soluble vitamins naturally. But muscle-meat-only carnivore has gaps. Electrolytes shift dramatically during...

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Feb 22, 2026

Best Protein Powder for Women Over 40: What Changes and Why

The best protein powder for women over 40 provides a useful dose of complete protein, fits the day's actual protein gap and agrees with your digestion. Look for a clear...

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Feb 22, 2026

Whole30 Protein Powder: The Complete Approved Guide

Most protein powders are not Whole30 compatible. Whey is out — it's dairy. Plant proteins made from pea, soy, or rice are out — legumes and grains. Anything with added...

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Feb 22, 2026

Best Protein Powder for Gut Health: What Actually Helps

The best protein powder for gut health is one that removes the ingredients causing gut damage in the first place. That means no dairy, no artificial sweeteners, no gums, and...

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Feb 22, 2026

Paleo Diet and Protein: The Complete Health Guide

The paleo diet is built on protein. Grass-fed beef, wild-caught fish, pasture-raised eggs, and organ meats form the foundation — the same foods humans ate for hundreds of thousands of...

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