The Core Nutritional Gaps in AG1
AG1, the popular greens powder from Athletic Greens, is marketed as a comprehensive nutritional supplement containing over 75 ingredients. While it is rich in many essential vitamins, minerals, and adaptogens, a closer look at its nutritional profile reveals some significant omissions that consumers need to be aware of. The most notable missing vitamins and minerals are Vitamin D and sufficient iron.
The Absence of Vitamin D
AG1 explicitly does not include Vitamin D in its powdered formula, a decision explained by the manufacturer on its website. The company's rationale is that Vitamin D is a fat-soluble vitamin best absorbed when taken with a source of fat and paired with Vitamin K2. To ensure optimal absorption, the company offers a separate, liquid Vitamin D3+K2 supplement. While this reasoning highlights an understanding of bioavailability, it creates an additional step and cost for users who require sufficient Vitamin D, a nutrient vital for immune function, bone health, and mood regulation. For individuals who rely on a single supplement for their daily nutritional needs, this is a critical oversight that could lead to a deficiency.
The Low Iron Content
In addition to the missing Vitamin D, the iron content in AG1 is notably minimal. While a daily serving of AG1 provides significant amounts of many vitamins and minerals—often exceeding 100% of the Daily Value (DV)—it offers only a fraction of the recommended iron intake. For many people, this low dose may not be a concern, but it is a major drawback for those at risk of iron deficiency, such as women of childbearing age, pregnant individuals, and vegetarians or vegans. The company’s formula contains only 6% of the DV for iron, which is insufficient for preventing or correcting a deficiency. This necessitates taking a separate iron supplement, which must be managed carefully due to potential interactions and side effects.
Beyond Missing Vitamins: A Full Nutritional Review
While the missing Vitamin D and low iron content are important considerations, a complete nutritional review of AG1 involves looking at its strengths and weaknesses as a whole.
The Highs: What AG1 Provides in Abundance
AG1 is packed with a wide range of micronutrients, providing more than 100% of the DV for several vitamins, including:
- Vitamin B12: Essential for nerve function and red blood cell production, with AG1 providing a massive 917% of the DV.
 - Biotin (B7): Crucial for metabolic functions, with 1,100% of the DV included.
 - Vitamin C: An antioxidant that supports immune health, supplied at 467% of the DV.
 - Other B Vitamins: A full complement of other B vitamins is also included in high doses, contributing to energy production and overall vitality.
 
The Cons: Proprietary Blends and Cost
Despite its high vitamin content, AG1 has several drawbacks. The formula uses proprietary blends, which means the exact amounts of many ingredients are not disclosed. This lack of transparency makes it difficult for consumers to know if they are receiving clinically effective dosages of specific herbs, adaptogens, or antioxidants. Additionally, AG1 is one of the more expensive greens powders on the market, costing significantly more than many alternatives. The high price, combined with the need to purchase separate supplements for Vitamin D and iron, makes it a costly investment for daily nutritional support.
AG1 vs. Other Nutritional Supplements
To put AG1's profile into perspective, here is a comparison with other common nutritional supplements:
| Feature | AG1 | Standard Multivitamin | Other Greens Powders | Whole-Food Diet | 
|---|---|---|---|---|
| Vitamin D | Separate supplement needed | Included in many | Often variable; some include it | Excellent source from sunlight/fortified foods | 
| Iron | Minimal content (<10% DV) | Often included | Variable; some include it | Excellent source from red meat, spinach, legumes | 
| Cost per serving | High ($2.63+) | Generally lower | Often lower; varies by brand | Minimal, assuming a healthy diet | 
| Ingredient Transparency | Proprietary blends hide dosages | Usually transparent | Can be variable; some are more transparent | Transparent; you know what you're eating | 
| Bioavailability | Potentially higher for some minerals (in vitro study) | Variable; tablet form can be less bioaccessible | Variable | Generally highest absorption rate | 
| Third-Party Testing | NSF Certified for Sport | Can be, but not always | Variable; many competitors test | Not applicable | 
The Importance of a Whole-Food Diet
Crucially, no supplement—including AG1—is a replacement for a diet rich in whole fruits and vegetables. A balanced, whole-food diet provides a wider array of nutrients, fiber, and other beneficial compounds that are not fully replicated in powder form. While greens powders can be a convenient way to fill some nutritional gaps, they should not be seen as a universal solution or an excuse to neglect whole foods. For most healthy individuals, a varied diet is the best way to meet nutritional needs, and supplements should only be used to address specific, confirmed deficiencies.
Conclusion: Filling the Gaps in Your Diet
Understanding what vitamins is AG1 missing is crucial for anyone considering adding it to their routine. The product is a robust source of many vitamins and minerals, particularly B vitamins, but it notably lacks Vitamin D in its primary formula and provides minimal iron. For individuals who require these specific nutrients, relying solely on AG1 is insufficient and may lead to deficiencies. The use of proprietary blends also limits ingredient transparency and the product's high cost adds to the overall burden. While AG1 can be a useful tool for some, especially athletes or those with particular dietary needs under a doctor's supervision, it is not a complete nutritional solution. For optimal health, a balanced diet should always be the foundation, with supplements used strategically to fill specific, identified gaps. For more information on dietary supplements and nutrient needs, consult a trusted authority like the National Institutes of Health.
Note: The content provided is for informational purposes only and does not constitute medical advice. Consult a healthcare professional before starting any new supplement regimen.
: https://ods.od.nih.gov/HealthInformation/nutrientrecommendations.aspx
: https://www.healthline.com/nutrition/athletic-greens-review : https://www.topnutritioncoaching.com/blog/ag1-review : https://drinkag1.com/en-uk/about-ag1/ingredients/ctr : https://www.goodhousekeeping.com/health-products/a46883816/athletic-greens-review/ : https://barbend.com/athletic-greens-alternatives/ : https://letsliveitup.com/blogs/supergreens/ag1-review : https://www.mcgill.ca/oss/article/critical-thinking-health-and-nutrition/you-probably-dont-need-green-ag1-smoothie : https://www.garagegymreviews.com/gruns-vs-ag1 : https://drinkag1.com/product/vitamin-d3-k2-liquid : https://therealfooddietitians.com/athletic-greens-review/ : https://www.mdpi.com/2673-9976/29/1/5 : https://www.bonappetit.com/story/ag1-review : https://letsliveitup.com/blogs/supergreens/ag1-ingredients : https://www.topnutritioncoaching.com/blog/ag1-review : https://www.innerbody.com/primal-greens-vs-ag1 : https://www.innerbody.com/athletic-greens-review : https://www.innerbody.com/athletic-greens-review