July 9, 2026

The arrival of the southwest monsoon transforms the coastal districts of Dakshina Kannada and Udupi into one of India's most picturesque landscapes. Torrential rains rejuvenate rivers, nourish agricultural fields, and bring welcome relief from the summer heat. Yet, the same rains also create ideal conditions for contaminated water, food spoilage, mosquito-borne diseases, and seasonal viral infections. It is therefore no coincidence that hospitals witness an increase in cases of diarrhoea, gastroenteritis, typhoid, hepatitis A, respiratory infections, dengue, leptospirosis, and influenza-like illnesses during this period.

While medicines play a crucial role in treating infections, the first line of defence begins much earlier—with the food we eat, the water we drink, and the hygiene we practise every day. Nutrition alone cannot prevent infections, but a balanced diet, safe drinking water, regular physical activity, adequate sleep, and proper food hygiene collectively strengthen the body's normal immune function and improve its ability to recover from illness.

Safe Water: The Most Important Nutrient This Monsoon

If there is one dietary recommendation that deserves the highest priority during the rainy season, it is the consumption of safe drinking water. Heavy rainfall frequently contaminates wells, overhead tanks, pipelines, and other water sources with bacteria, viruses, and parasites. Clear-looking water is not necessarily safe, as harmful microorganisms are invisible to the naked eye.

Families should therefore drink boiled and cooled water, particularly when using well water or whenever the quality of the water supply is uncertain. A household water purifier is beneficial only when it is properly maintained according to the manufacturer's recommendations. Water should be stored in clean, covered containers and dispensed hygienically. Roadside water and beverages prepared with untreated water should be avoided.

Many people reduce their water intake during rainy weather because they do not feel thirsty. However, hydration remains essential for maintaining circulation, regulating body temperature, supporting digestion, and replacing fluid losses during fever or diarrhoea. Warm water, soups, and freshly prepared rasam are excellent ways to maintain hydration during the monsoon.

Immunity Is Built Every Day—Not Overnight

One of the most common questions nutrition professionals encounter during the rainy season is, "Which food boosts immunity?" The answer may surprise many people. Immunity cannot be built by consuming a single "superfood" or herbal preparation. Instead, it depends on the regular intake of a wide range of nutrients that work together to support the body's immune system.

Protein forms the building blocks of antibodies and immune cells. Eggs, fish, pulses, sprouts, milk, curd, paneer, soybean, and legumes should therefore be included regularly in the diet. Vitamin C-rich fruits such as guava, amla, oranges, sweet lime, papaya, and tomatoes support normal immune cell function and act as antioxidants. Vitamin A, obtained from pumpkin, carrots, drumstick leaves, spinach, and other green leafy vegetables, helps maintain healthy skin and mucosal barriers that serve as the body's first line of defence against infections. Zinc, found in sesame seeds, whole grains, legumes, groundnuts, and seafood, plays an important role in wound healing and immune function, while iron-rich foods such as millets, pulses, dates, sesame, garden cress seeds, and green leafy vegetables help prevent nutritional deficiencies that may compromise immunity.

In essence, immunity is not built by one magical ingredient but by the cumulative effect of consuming a balanced, colourful, and nutrient-dense diet every day.

Traditional Wisdom Meets Modern Science

For generations, families across coastal Karnataka have adapted their eating habits according to the seasons. Many of these traditional practices continue to hold nutritional value and deserve appreciation when interpreted through the lens of modern science.

A common example is kashaya, the warm herbal decoction prepared using dry ginger (Shunti), black pepper, coriander seeds, cumin, tulsi, cinnamon, cloves, or cardamom. Traditionally, kashaya has been consumed to provide warmth during the cold and damp monsoon season. Scientific studies show that many of these spices contain naturally occurring phytochemicals with antioxidant and anti-inflammatory properties. Drinking a warm herbal beverage may also soothe the throat, promote hydration, and provide comfort during episodes of cough or cold. However, kashaya should be regarded as a supportive dietary practice rather than a replacement for medical treatment or a guaranteed method of preventing infections. Individuals with chronic illnesses, pregnancy, hypertension, or kidney disease should avoid excessive intake of concentrated herbal preparations without professional advice.

Understanding "Vata" During the Rainy Season

Many elderly individuals observe that joint pain, backache, and stiffness become more pronounced during the rainy season. In Ayurveda and Naturopathy, this phenomenon is often attributed to an aggravation of Vata, the principle associated with movement, dryness, and cold. Although modern medicine explains this differently, there is some agreement that cool temperatures, increased humidity, reduced physical activity, and changes in atmospheric pressure can contribute to greater joint stiffness or make the symptoms of arthritis more noticeable in susceptible individuals.

Maintaining regular movement through walking, stretching, and yoga, along with adequate intake of calcium, vitamin D, protein, sesame seeds, nuts, and fresh fish when available, can support musculoskeletal health. Warm meals and adequate hydration also contribute to overall comfort during prolonged periods of wet weather.

Seasonal Foods from Our Own Kitchens

One of the greatest strengths of coastal Karnataka is its rich culinary heritage. Many traditional monsoon foods are nutritionally superior to highly processed convenience foods.

Horse gram (Huruli), commonly prepared as huruli saaru, is an excellent source of protein, dietary fibre, iron, and polyphenols. Ragi (finger millet) provides complex carbohydrates, calcium, and fibre, making it an ideal breakfast cereal or porridge during cool mornings. Jackfruit seeds, abundant during the early monsoon, are rich in resistant starch, potassium, fibre, and B-complex vitamins. Sesame seeds supply calcium, zinc, vitamin E, and heart-healthy fats, while turmeric, widely used in Indian cooking, contains curcumin, a bioactive compound recognised for its antioxidant and anti-inflammatory properties.

Traditional fermented foods such as idli and dosa deserve special mention. Fermentation improves digestibility and enhances the bioavailability of several nutrients, making these foods ideal for rainy-season breakfasts when served fresh with sambar or chutney.

Fish During the Monsoon: Quality Matters More Than Quantity

Fish is an integral part of the coastal diet. However, the southwest monsoon is also the period during which marine fishing activity is restricted because of rough sea conditions and the annual fishing ban implemented to protect fish breeding. As a result, fresh marine fish becomes less available and market prices often increase.

Consumers should avoid purchasing fish of doubtful freshness simply because it is available. Fresh fish from trusted vendors remains an excellent source of high-quality protein and omega-3 fatty acids. When fresh fish is unavailable or expensive, there is no nutritional disadvantage in choosing alternatives such as eggs, milk, curd, paneer, pulses, chickpeas, green gram, soybean, or sprouts.

Eat Fresh, Eat Warm, Eat Safe

Warm and humid weather encourages rapid bacterial growth in food. Rice, curries, meat, seafood, and milk-based dishes left at room temperature for several hours may harbour harmful microorganisms even when they appear perfectly normal.

Meals should therefore be freshly prepared whenever possible. Leftovers should be refrigerated promptly and reheated thoroughly before consumption. Salads, cut fruits, and uncovered street foods should be consumed only when prepared under hygienic conditions. Fruits and vegetables should always be washed thoroughly under clean running water before cooking or eating, especially leafy vegetables, which often retain soil and contaminants between their leaves.

The rainy season naturally encourages cravings for hot pakodas, bhajis, bondas, and fried snacks. While these traditional favourites can certainly be enjoyed occasionally, they should complement rather than replace balanced meals. A wholesome plate consisting of rice or millet, dal or sambar, vegetables, pulses or fresh fish, curd, and seasonal fruits provides significantly greater nutritional value.

Small Habits That Make a Big Difference

Good nutrition is inseparable from good hygiene. Washing hands before meals, keeping kitchens clean, separating raw and cooked foods, covering prepared food, and drinking safe water are among the simplest yet most effective measures to prevent seasonal illnesses. Parents should encourage school-going children to carry safe drinking water and home-prepared snacks instead of purchasing uncovered foods from roadside vendors. 

The monsoon nourishes our land, replenishes our reservoirs, and sustains our agriculture. It should also remind us to nourish our own health with equal care. The strongest defence against seasonal illnesses is not found in expensive supplements or miracle remedies but in the consistent practice of healthy living—drinking safe water, eating freshly prepared balanced meals, respecting traditional foods supported by scientific evidence, maintaining hygiene, and remaining physically active.

Our ancestors adapted their diets to the rhythm of the seasons, and modern nutrition science increasingly validates many of those practices. By combining this traditional wisdom with evidence-based dietary choices, families across coastal Karnataka can enjoy the beauty of the monsoon while safeguarding their health. After all, every healthy season begins not in the pharmacy, but in the kitchen.