The Global Supplement Boom
Global sales of dietary supplements exceeded $150 billion in 2024 and continue to grow rapidly. In India, the nutraceuticals market is expanding at double-digit rates, driven by increasing health awareness and the COVID-19 pandemic's focus on immunity.
But are most people who take supplements actually deficient in those nutrients? The answer, often, is no. This article helps you cut through the marketing noise and understand when supplements genuinely help.
What Are Nutritional Supplements?
Nutritional supplements (also called nutraceuticals or dietary supplements) include:
- Vitamins — A, B-complex, C, D, E, K
- Minerals — Iron, Calcium, Zinc, Magnesium, Iodine
- Amino acids — Protein supplements, BCAAs
- Herbal extracts — Ashwagandha, Turmeric, Amla
- Probiotics — Live beneficial bacteria
- Omega-3 fatty acids — Fish oil, flaxseed oil
- Specialised formulations — Prenatal vitamins, sports nutrition
Supplements That Have Strong Evidence
Vitamin D
Vitamin D deficiency is extremely common in India despite abundant sunshine — largely due to indoor lifestyles, dark skin tone (which reduces vitamin D synthesis), and limited dietary intake. Vitamin D is essential for bone health, immune function, and mood regulation.
Who needs it: Most urban Indians, especially those who work indoors; people with darker skin; elderly individuals; post-menopausal women.
Folic Acid (Vitamin B9)
Folic acid is critical for neural tube development in the fetus. Deficiency during early pregnancy significantly increases the risk of spina bifida and other neural tube defects.
Who needs it: All women planning pregnancy and during the first trimester. Read more about supplements during pregnancy →.
Iron
India has some of the world's highest rates of iron-deficiency anaemia, particularly among women and children. Iron is essential for making haemoglobin, which carries oxygen in the blood.
Who needs it: Menstruating women, pregnant women, vegetarians and vegans, children, and anyone diagnosed with anaemia.
Vitamin B12
B12 is found almost exclusively in animal products. Vegetarians and vegans are at significant risk of deficiency over time. B12 deficiency causes anaemia, nerve damage, and cognitive decline.
Who needs it: Vegetarians, vegans, elderly individuals (absorption decreases with age), people on certain medications (e.g., metformin for diabetes).
Calcium
Essential for strong bones and teeth. Dairy intake is the primary dietary source. Those who are lactose intolerant or vegan may not meet requirements through diet alone.
Who needs it: Post-menopausal women (high risk of osteoporosis), elderly individuals, people with low dairy intake.
Omega-3 Fatty Acids
EPA and DHA (from fish oil) have strong evidence for cardiovascular health, reducing inflammation, and supporting brain function. Plant-based ALA (from flaxseed) has limited conversion to active forms in the body.
Who needs it: People with high triglycerides or cardiovascular risk factors; those who rarely eat fatty fish; pregnant women for fetal brain development.
Common Supplements With Limited Evidence
Some popular supplements have weaker or mixed evidence for most healthy adults:
- Multivitamins: Beneficial if you have dietary gaps; limited benefit if you eat a balanced diet
- Vitamin C (high dose): Does not prevent colds in most people; may slightly reduce duration
- Biotin for hair growth: Only effective if biotin deficiency is the cause of hair loss
- Collagen supplements: Limited evidence for skin, joint, or bone benefits
How to Choose a Quality Supplement
With hundreds of products on the market, quality varies enormously. Look for:
- 1FSSAI licensed (India) or relevant regulatory approval
- 2Third-party tested for purity and potency
- 3Clear labelling of ingredients and doses
- 4No proprietary blends (where individual ingredient amounts are hidden)
- 5Manufactured by GMP-compliant facilities
Mithilanchal Pharma's nutraceutical range is manufactured to pharmaceutical-grade standards, ensuring purity, potency, and safety. Explore our nutraceuticals →.
Key Takeaways
Supplements are not a replacement for a healthy diet and lifestyle. They are tools to address specific deficiencies or support particular health needs. Before starting any supplement:
- 1Get tested — know your actual nutrient levels
- 2Consult your doctor or nutritionist
- 3Choose quality products from reputable manufacturers
- 4More is not always better — respect recommended doses