Beef牛肉
Signature ingredient: Vitamin B12 — A-grade evidence (B12 Deficiency Anemia, ~104% of the studied dose per serving)
Standard nutrients per USDA FoodData Central · phytochemicals (lutein / K2 / sulforaphane etc.) are literature estimates, varying by variety and processing
S / A … ingredient evidence tier (tap for the claim) | bar = how much of the studied dose one serving of Beef gives you
Meaningful intake one serving delivers a real fraction of the studied dose
Vitamin B12
2.5ug · 104% DV · Excellent source
A B12 Deficiency Anemia →
＋ Pernicious Anemia A・Neuropathy B
≈ 104% of studied dose
Zinc
6mg · 55% DV
B Immune Function →
＋ Age-related Macular Degeneration A・Diarrhea Pediatric A
≈ 55% of studied dose
Trace contribution far below the studied dose — not a therapeutic source
Iron
2.6mg · 14% DV · Heme iron; far better absorbed than plant iron (compare with spinach)
S Iron Deficiency Anemia →
＋ Heart Failure A・Pregnancy A
≈ 14% of studied dose
Creatine
0.5g · Natural content is far below the exercise supplement dose (3-5 g)
A Muscle Gain →
＋ Exercise Recovery B・Sarcopenia B
≈ 12% of studied dose
Why this page doesn't claim "Beef works"
Whole foods almost never have RCTs — the evidence sits on the ingredients. So this page does one honest thing: it lists which graded ingredients Beef contains, how much, and how far that is from the studied dose. It makes no efficacy claim about Beef itself.
Bottom line: Beef's strengths are vitamin B12 and zinc; its iron is the well-absorbed heme form, but only a moderate amount per serving, and its creatine is far below an exercise supplement dose.
Every tier links to its full evidence page · Methodology →