Debunking Food Myths in India: Science vs Sentiment

    - Ganadhish Kamat

India’s food culture is rich, layered, and deeply intertwined with tradition, philosophy, and regional practices. While many customs have sound practical roots, others have evolved into widely accepted “truths” without strong scientific backing. In an era where nutrition science is far more advanced, it’s worth separating evidence from assumption.

Here’s a clear-eyed look at some of the most persistent food myths in India—and what science actually says.

1. Microwave Cooking is Harmful

The Myth: Microwave ovens destroy nutrients and expose food to harmful radiation.

The Science:
Microwaves use non-ionizing radiation, which simply excites water molecules to generate heat. This is fundamentally different from ionizing radiation (like X-rays), which can damage DNA.

• Nutrient loss in cooking depends more on time and temperature, not the method.
• Microwave cooking is often faster and uses less water, which can actually preserve vitamins better than boiling.
• Numerous studies, including those referenced by organizations like the World Health Organization, confirm that microwave cooking is safe when used properly.

Verdict: Microwave cooking is not only safe but can be nutritionally efficient.

2. Refrigeration Destroys Nutrients

The Myth: Storing cooked food in the refrigerator strips it of nutrients and makes it unhealthy.

The Science:
Refrigeration slows down microbial growth and enzymatic degradation, which actually helps preserve food quality.

• Some vitamins (like Vitamin C) may degrade over time, but this happens whether food is stored at room temperature or in the fridge—just much slower in the fridge.
• In fact, refrigeration is critical in preventing foodborne illnesses caused by bacteria like Salmonella or E. coli.
• It has been found that refrigerating cooked rice significantly reduces its glycemic index (GI) by increasing its resistant starch content

Verdict: Refrigeration preserves food safety and retains most nutrients far better than leaving food out.

3. “Tamasik” and “Satvik” Foods Affect Behavior

The Myth: Foods categorized as tamasik (e.g., onions, garlic, meat) induce lethargy or negative emotions, while satvik foods promote purity and calmness.

The Context:
These classifications come from ancient Indian philosophy, particularly texts like the Bhagavad Gita and are rooted in spiritual and ethical frameworks—not biological science.

The Science:

• There is no biochemical evidence that foods like onion or garlic inherently cause mental dullness.
• On the contrary, garlic contains allicin, known for cardiovascular benefits.
• Food can influence mood (e.g., blood sugar fluctuations), but this is related to nutrient composition, not spiritual classification.

Verdict: These categories are philosophical, not scientific. Nutritional value should be judged based on measurable health effects.

4. Non-stick and Aluminum Utensils are Dangerous

Non-stick Cookware

The Myth: Non-stick pans release toxic chemicals that cause cancer.

The Science:

• Traditional concerns were about PFOA, once used in manufacturing Teflon.
• Today, most reputable brands are PFOA-free.
• Non-stick coatings (like PTFE) are stable at normal cooking temperatures. Problems arise only when overheated beyond ~260°C.

Verdict: Safe under normal cooking conditions. Avoid overheating or using damaged pans.

Aluminum Utensils

The Myth: Aluminum leaches into food and causes diseases like Alzheimer’s.

The Science:

• Aluminum is naturally present in many foods and water.
• While small amounts can leach into food (especially acidic dishes), the levels are generally well within safe limits.
• Extensive studies have found no conclusive link between aluminum exposure and Alzheimer’s disease.

Verdict: Safe for everyday use, though moderation and variety in cookware is sensible.

5. Reheating Food Makes It Toxic

The Myth: Reheating food (especially rice or potatoes) turns it poisonous.

The Science:

• The issue is not reheating, but improper storage.
• Cooked rice can harbor spores of Bacillus cereus if left at room temperature too long.
• Proper refrigeration and reheating to adequate temperatures eliminate risk.

Verdict: Reheating is safe—poor storage is the real problem.

6. Milk and Fish Together Cause Skin Diseases

The Myth: Consuming milk and fish together leads to conditions like Vitiligo.

The Science:

• There is no clinical evidence supporting this claim.
• Vitiligo is an autoimmune condition, unrelated to food combinations.

Verdict: This is a cultural belief, not a medical fact. 

7. Cold Food or Drinks Cause the Common Cold

The Myth: Drinking cold water, ice cream, or refrigerated food leads to a “cold.”

The Science:
The common cold is caused by viruses, most commonly the Rhinovirus.

• You catch a cold through viral transmission, not temperature of food.
• Cold weather may indirectly increase infections because people stay indoors and viruses spread more easily—not because of cold drinks.
• Some individuals may feel throat irritation from cold items, but that’s not the same as infection.

Verdict: Cold foods don’t cause colds—viruses do.

8. Curd Should Not Be Eaten at Night

The Myth: Eating curd (yogurt) at night leads to mucus formation, cold, or digestive issues.

The Science:
Curd is rich in probiotics like Lactobacillus, which actually aid digestion.

• There’s no inherent property of curd that makes it harmful at night.
• In some people prone to acid reflux or sinus sensitivity, curd might cause mild discomfort—but this is individual-specific, not universal.
• In fact, fermented foods can improve gut health regardless of timing.

Verdict: Perfectly safe for most people at night; adjust only if you personally experience discomfort.

9. Some Oils Are “Good” While Others Are “Bad”

The Myth: Oils like mustard, coconut oil or ghee are inherently healthy, while refined oils are harmful (or vice versa, depending on who you ask).

The Science:
No single oil is universally “good” or “bad.” What matters is:

• Fat composition (saturated, monounsaturated, polyunsaturated)
• Smoke point (stability at cooking temperatures)
• Quantity consumed

For example:

• Mustard oil contains beneficial omega-3 fatty acids.
• Ghee contains saturated fats—fine in moderation.
• Refined oils are processed but can be stable and safe for high-heat cooking.

Excess consumption of any fat can increase risk of Cardiovascular disease.

Verdict: Variety and moderation matter more than labeling oils as “good” or “bad.”

10. Eating Fruits After Meals is Harmful

The Myth: Fruits should never be eaten after meals because they “ferment” in the stomach.

The Science:

• The stomach is a highly acidic environment—fermentation by microbes doesn’t occur there in the way people imagine.
• Fruits digest along with other foods; the body is well-equipped to handle mixed meals.
• There’s no evidence that timing of fruit consumption significantly affects digestion in healthy individuals.

Verdict: Eat fruits whenever convenient—before, during, or after meals.

11. Eating Mangoes with Milk Causes Problems

The Myth: Combining mangoes and milk leads to skin issues or digestive imbalance.

The Science:

• Mango milkshakes and desserts like aamras with milk have been consumed for generations.
• There is no biochemical incompatibility between milk proteins and mango sugars.
• Unless someone has lactose intolerance or a specific allergy, this combination is harmless.

Verdict: Safe and nutritionally rich combination.

12. Spicy Food Causes Ulcers

The Myth: Eating spicy food leads to stomach ulcers.

The Science:

• Most stomach ulcers are caused by infection with Helicobacter pylori or prolonged use of certain medications.
• Spicy food can irritate an existing ulcer but does not cause it.

Verdict: Spice doesn’t create ulcers—it may just aggravate symptoms if one already exists.

13. Jaggery is Always Healthier Than Sugar

The Myth: Replacing sugar with jaggery (gur) makes sweets “healthy.”

The Science:

• Jaggery contains small amounts of minerals like iron, but nutritionally it is still mostly sugar.
• Both jaggery and sugar raise blood glucose levels and contribute similar calories.

Verdict: Slightly less processed, but not a free pass—consume in moderation.

Why Do These Myths Persist?

• Cultural transmission: Knowledge passed down generations often goes unquestioned.
• Anecdotal evidence: Personal experiences are mistaken for universal truths.
• Mistrust of modern methods: Industrialization of food leads to skepticism about new technologies.

Many of these myths originate from:

• Seasonal or regional practices that were generalized
• Ayurvedic or philosophical interpretations
• Misunderstanding of cause and effect

Traditional systems like Ayurveda often emphasize balance and personalization, but their concepts are sometimes oversimplified into rigid rules.

The Balanced Approach

Dismissing all tradition would be as misguided as blindly following it. Many Indian practices—like fermentation, seasonal eating, and spice usage—have strong scientific backing.

But when it comes to health and nutrition:

• Prioritize evidence-based understanding
• Be open to updating beliefs
• Combine traditional wisdom with modern science

Conclusion

Food myths often arise from a mix of philosophy, caution, and incomplete understanding. While they may carry cultural value, they should not override scientific evidence—especially when they influence public health decisions.

Food is often divided into binaries—hot vs cold, good vs bad, natural vs processed. Science rarely works in such absolutes.

A more rational approach would be:

• Focus on overall dietary patterns, not isolated rules
• Recognize individual variability
• Combine traditional practices with scientific validation

In the end, good nutrition isn’t about fearing foods—it’s about understanding them.