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Happy Tummy Expert

2 years ago

Dear Suresh Narang, Thank you for the question

Immune system, a network of intricate stages and pathways in the body, protects us against these harmful microbes as well as certain diseases. It recognizes foreign invaders like bacteria, viruses, and parasites and takes immediate action. Some of the factors that can weaken the immune system include Environmental toxins (smoke and other particles contributing to air pollution, excessive alcohol), Obesity, Poor diet, Chronic mental stress, Lack of sleep and rest.

However, a balanced diet consisting of a range of vitamins and minerals, combined with healthy lifestyle factors like adequate sleep and exercise and low stress, most effectively helps support immune system of the body to fight infection and disease.

Here are few tips to help boosting the immunity
- Vitamins such as vitamin A, B6, B12 and C are known to support immune functions in the body. Good sources include, yellow-orange fruits & vegetables, dark green leafy vegetables, citrus fruits, fortified cereals, eggs etc.
- Vitamin E, Zinc, selenium, iron, copper and folic acid play a vital role and help the immune system in several ways: working as an antioxidant to protect healthy cells, supporting growth and activity of immune cells, and producing antibodies. Dietary sources for these nutrients include nuts, seeds, lean meat, sea food, chickpeas, ragi etc.
- A high-fiber plant-rich diet with plenty of fruits, vegetables, whole grains, and legumes appear to support the growth and maintenance of beneficial microbes. Certain helpful microbes break down fibers into short chain fatty acids, which have been shown to stimulate immune cell activity.
- Gut microbiota helps regulate metabolism and energy balance, include banana, garlic, yogurt, buttermilk, soybean etc., which are good sources of prebiotics and prebiotics in your daily balanced diet to maintain healthy gut.

WHO has given different BMI (Body mass index) classifications to categorise adults into different weight categories. BMI is a simple index of weight-for-height. It can be considered as a 2nd level indicator of overall health.
It can be calculated using a simple formula of BMI = Weight (kg) / Height (m²)
Following is the WHO BMI Classification
18.5 to 24.9 - Normal
Less than 18.5 - Underweight
25 to 29 - Overweight
Above 30 - Obese

As per WHO BMI (Body Mass Index) classification, a person weighing less than 18.5 kg/m2 is considered underweight.

The causes of underweight or unintended weight loss can be due to genetics, inadequate food intake, stress, hormonal imbalance, malabsorption or other underlying health condition. With any weight gain diet, changes take time to reflect as your body requires sufficient time to adapt to the changes in order to show results.


A high calorie and high protein diet is recommended for weight gain. Daily protein requirement should ideally be followed as 0.8-1g protein per kg body weight. Some of the sources of high protein include pulses, lentils, milk, paneer, soybean, eggs, lean meat, nuts & seeds etc.
Here are few guidelines that can be considered
- Having a Healthy Diversified Balanced Diet that includes all the food groups in the right quantity which thereby provides you with all the essential macro and micro nutrients that your body requires daily for proper functioning. Include energy dense foods, keeping in mind the daily needs.
- Maintain a positive energy balance where the calorie intake should be more than the energy expenditure.
- Include energy dense foods, keeping in mind the daily needs. Some of the energy dense foods include Whole wheat, millets, dairy products, nuts, colocasia leaves, banana, raisins, pulses/lentils etc.
- Do not skip meals. Eat small frequent meals.
- Three major meals a day with healthy nutritious snacks in between is preferred.
- Try to increase the serving size and portion size gradually and systematically
- Include healthy fats from nuts and seeds.
- Drink at least 8 glasses of water per day to maintain hydration
- Indulging in physical activity can help in increasing the appetite and give a feeling of hunger.
- Try to follow a good sleep regimen in terms of both quantity and quality.
For a customised and personalised meal plan for specific conditions, please contact your Health care professional.
Hope we have answered your query.
Wishing you a great day ahead

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