Iron: Nutrition, Pros & Cons
Iron is an essential micronutrient critical for the formation of hemoglobin, which transports oxygen throughout the body. In India, dietary iron intake is vital to combat iron-deficiency anemia, with national guidelines emphasizing strategies to enhance its bioavailability from plant-based diets.
Health conditions
- Good for Muscle Gain [ICMR-NIN, USDA]
- Good for Anemia [ICMR-NIN, ICMR-NIN]
- Good for Immunity [ICMR-NIN, PubMed]
- Good for Thyroid [PubMed]
- Caution for Gut Health [PubMed]
Pros
- Crucial for the synthesis of hemoglobin and prevention of nutritional anemia. [ICMR-NIN]
- Supports cellular energy production and optimal cognitive development. [ICMR-NIN]
- Plays a vital role in maintaining robust immune function and cellular defense mechanisms. [PubMed]
Cons
- Plant-based non-heme iron has low bioavailability and its absorption is inhibited by dietary phytates, tannins, and oxalates. [ICMR-NIN]
- Excessive supplemental iron intake can cause gastrointestinal side effects such as constipation, nausea, and abdominal discomfort. [PubMed]
Key nutrients
- Iron — Present as highly bioavailable heme iron in animal foods, and non-heme iron in plant foods (such as green leafy vegetables, legumes, and dried fruits) which requires enhancers like Vitamin C for optimal absorption.