HomeHealth & FitnessNutritionist explains how Vitamin D, Iron and B12 deficiency can spell trouble for your health and fitness

Nutritionist explains how Vitamin D, Iron and B12 deficiency can spell trouble for your health and fitness

Sometimes, despite adding many healthy foods to your diet, you feel tired. Many factors, including certain nutrient deficiencies, impact your mood, energy, and immunity. Here’s how  vitamin D, Iron, and B12, which are often overlooked, are crucial for maintaining good health.

November 04, 2025 / 17:01 IST
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Symptoms of Vitamin deficiency: Chronic fatigue, brain fog, or mood swings, often indicate hidden deficiencies, despite eating well (Image: Pexels)
Symptoms of Vitamin deficiency: Chronic fatigue, brain fog, or mood swings, often indicate hidden deficiencies, despite eating well (Image: Pexels)

Your diet, and what you add to it, decides your long term well-being. There are cases when even the so called ‘ healthy diet’ has been deficient in important nutrients. While all nutrients are critical, deficiency of nutrients like Vitamin D, Iron, and Vitamin B12, can spell trouble for you.

Dr. Shuchi Sharma, Senior Consultant, Nutrition and Dietetics, Sahyadri Super Speciality Hospital, Nagar road, Pune, tells Moneycontrol that these three nutrients work together like a power team, keeping your energy, mood, and immunity in check. “Vitamin D is essential for helping our body absorb calcium and keep bones and muscles strong,” explains Dr Sharma. These also regulates mood and supports immune function.

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Still, accordingly to multiple studies, around 70–80 percent of Indians suffer from low Vitamin D, despite abundant sunshine. “Indoor lifestyles, sunscreen use, and city pollution mean many of us barely receive enough rays. Low Vitamin D manifests as tiredness, joint pain, low mood, frequent infections, and, particularly in post-menopausal women, weaker bones and increased risk of osteoporosis,” says Dr Sharma.

Also read | 10 common symptoms of nutrient deficiencies in men and women, how to prevent it