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A recent study published in The Lancet highlights a global health crisis, revealing that over half of the world's population lacks essential nutrients such as iron, folate, and calcium. This widespread nutrient deficiency, often referred to as 'hidden hunger,' affects individuals across various ages and genders. The study emphasizes the critical importance of addressing these deficiencies to improve global health. The findings suggest that while animal foods are rich in bio-available nutrients, there is a growing push towards plant-based diets, which may lack these essential nutrients. The study was conducted by researchers from HarvardChanSPH.