Key nutrients

"Key nutrients" is a broad categorical term referring to the essential dietary components required for human growth, metabolic maintenance, and cellular function [1][6]. This category is divided into macronutrients, such as proteins, carbohydrates, and fats, which provide energy and structural building blocks, and micronutrients, including vitamins and minerals, which act as critical cofactors for enzymatic reactions [5][12]. While not a specific molecular target itself, many individual nutrients function as signaling molecules that engage precise biological sensors; for instance, fatty acids act as ligands for G protein-coupled receptors like GPR40 and GPR120, while amino acids modulate the mammalian target of rapamycin (mTOR) pathway [2][13]. In various disease states, the dysregulation of nutrient sensing or availability is closely linked to metabolic syndrome, type 2 diabetes, and obesity [7][13]. Therapeutic approaches involve the direct administration of supplements to correct deficiencies or the use of drugs like metformin and orlistat that influence nutrient sensing or absorption [9][12]. Furthermore, "nutrient starvation" is an emerging strategy in oncology aimed at depleting essential metabolites such as glucose or glutamine to inhibit the rapid proliferation of cancer cells [8][15].

Other names

Essential nutrientsDietary nutrientsMacronutrientsMicronutrients

Nutrient replenishment to restore homeostasis, modulation of nutrient-sensing pathways (e.g., mTOR, AMPK), or competitive inhibition of nutrient uptake and absorption.