Strengthen Immunity the Ayurvedic Way for Lifelong Resilience

26 March 2026

Author: Dr. Bhanu Sharma

Immunity, the body’s resilience to disease, is a trending topic, especially in today’s challenging environment, where the very air we breathe in is highly polluted. While quick-fix remedies to promote immunity flood the market, Ayurveda has always maintained that immunity must be developed naturally, over time. Read on to know how to boost immunity naturally.

What Is Immunity? 

The immune system acts as a natural shield that defends us from infections, viruses and bad bacteria. It also speeds up recovery when we get sick. In addition, a healthy immune system helps us maintain energy and the health of our organs.

How the Immune System Works 

The immune system is complex and versatile. When a new virus is introduced into the system, it produces antibodies and triggers responses of T-cells that identify and destroy infected or abnormal cells. If the immune system is strong, it can overcome the virus and develop a memory response to be able to deal with fresh attacks more efficiently.

Types of Immunity 

There are two types of immunity: Active and Passive. 

‘Active immunity’ refers to the response that triggers the production of antibodies to a disease. This may be natural or vaccine-induced. 

• Natural immunity is acquired from exposure to the disease organism through infection.
• Vaccine-induced immunity is acquired through the introduction of a weakened form of the disease through vaccination. 

Either way, ‘active immunity’ protects the individual from being infected by the particular disease with the release of antibodies. Active immunity is long-lasting and sometimes may last lifelong. 

‘Passive immunity’ is activated when an individual is given antibodies to a disease rather than producing them through his or her own immune system. 

• A newborn baby acquires passive immunity from its mother through the placenta. 
• People can also gain passive immunity through blood products that contain antibodies, such as immune globulin. These are given when immediate protection against a specific disease is needed.

The major advantage of passive immunity is that protection is immediate, whereas active immunity takes time (usually several weeks) to develop. However, passive immunity lasts only for a few weeks or months.

Why Immunity Feels Weak in Modern Times 

1. Stress and Immune Suppression

Chronic stress and immunity are closely linked. Stress leads to long-term activation of the body’s response system, increasing levels of the ‘stress hormone’, cortisol. Over time, this may suppress the immune function.

Ayurveda holds that persistent stress aggravates Vata Dosha (internal bio-energy), disturbing agni (digestive fire) and depleting ojas (vital essence).

2. Poor Sleep

When sleep is disrupted, the body cannot adequately repair tissues, regulate hormones, or produce key immune cells. Over time, this weakens the body’s defence mechanisms and lowers resistance to illness.

3. Processed Diets

Packaged, processed, and ultra-refined foods are low in essential nutrients that support immune function. Frequent consumption of excess sugar, refined carbohydrates, and unhealthy fats may promote low-grade inflammation and weaken immune responses.

Ayurveda points out that a poor diet fails to nourish the body and produce adequate ojas (vital essence). Highly processed foods put further strain on the digestive system, leading to improper digestion and the formation of ama (undigested toxins). 

The Ayurvedic View of Immunity 

Vyadhikshamatva (the body’s ability to resist disease and maintain balance/immunity) depends on several factors, such as the balance of doshas (internal bio-energies) and dhatus (body tissues), as well as the proper functioning of agni (digestive fire), and the srotas (body channels).
Immunity is also described through the concept of bala (strength or vitality), which helps the body resist disease. Bala, in turn, is considered to be synonymous with ojas (vital essence).
Bala is classified into three types:

• Sahaja Bala (innate or genetic strength): This is the natural resistance of body and mind present in an individual from birth, and which determines prakriti (constitution).
  
• Kalaja Bala (time-related strength): This refers to strength or immunity that is impacted by age, time and environmental factors. Strength is relatively low in childhood and old age and may vary with the seasons – immunity is believed to be poor during aadankala (northern solstice) and good   during visargakala (southern solstice).
  
• Yuktikruta Bala (acquired strength): Strength acquired through conscious effort, including proper ahara (food), vihara (lifestyle), exercise, and the use of rasayana (rejuvenating herbs and therapies).

Ojas – The Foundation of Immunity

When the saptadhatus (the seven fundamental tissues) are properly nourished and balanced, their most refined essence forms ojas (vitality, strength, and immunity), are said to reside in the heart. Regarded as pranayatan (seat of life), ojas is life-sustaining. Also, bala (strength) is believed to be derived from ojas. Therefore, resisting disease through the strength of ojas (vital essence) forms the main mechanism of vyadhikshamatva (disease-resistance).

Several factors can lead to ojakshaya (depletion of ojas), including injury, anger, sorrow, excessive exercise, hunger, imbalance of Kapha (internal bio-energy linked to structure and lubrication) and Vata (bio-energy linked to movement), dry or insufficient food, excessive wind and sun exposure, fear, alcohol consumption, night awakening, and loss of tissues such as Rakta (blood), and Shukra (reproductive).

Role of Agni (Digestive Fire)

When agni (digestive fire) is strong and balanced, food is properly digested, and nutrients are absorbed effectively. This supports the formation of healthy tissues and ultimately leads to the production of strong ojas, thereby strengthening immunity.

However, when agni becomes weak or irregular due to overeating, poor diet, stress, or irregular eating habits, digestion is incomplete. This results in the formation of ama (toxic metabolic by-product) that can accumulate in the body. Ama obstructs the srotas (body channels), nourishment of dhatus (tissues), and reduces the body’s natural defence mechanisms.

Therefore, maintaining healthy digestion is an important strategy in Ayurveda for building strong immunity.

Seasonal Balance

Ayurveda recognises that immunity naturally fluctuates with seasonal changes. When these changes are not managed properly, they influence the balance of the three doshas (internal bio-energies governing the body), leading to reduced resistance and increased susceptibility to illness.

Thus, Ayurveda advocates seasonal lifestyle guidelines known as Ritucharya (seasonal routine), which include adapting diet, daily routines, physical activity, and herbal support according to the season.

How to Boost Immunity Naturally

Ayurveda is all about bringing about wellness naturally. Following the tenets below helps develop immunity and promote sustained health

Daily Routine (Dinacharya – daily lifestyle routine)

Eating, sleeping, and waking should be aligned with the Ayurvedic body clock. This helps complete digestion, supports sleep, nourishes the tissues and balances the doshas, helping to keep up immunity

Balanced Diet

In Ayurveda, wholesome, balanced meals with all six tastes, adapted to the season, are the primary necessity for growth, nourishment and healthy immunity.

Stress Management

Stress depletes ojas (vital essence), reducing immunity. Herbs such as ashwagandha, brahmi and tagar, along with Yoga, breathwork and meditation, help destress naturally.

Immune Boosting Foods in Ayurveda

Wholesome food is the key to growth and health. Ajasrika Rasayana, or foods that are consumed daily for nourishment (eaten in moderation), and sweet and lubricating foods are good for dhatus (tissues) – important to promote immunity.

Incorporating agrya dravyas (best foods) such as green gram, rock salt, grapes, ghee, and red rice promotes health and boosts immunity. Ghee, honey and milk are also known to help nurture ojas (vital essence or vitality). Regular moderate use of ghee and milk is said to be rejuvenating. Amalaki is considered to be a particularly rejuvenating herb.

Meals should have shadras (all six basic tastes) – madhur (sweet), amla (sour), lawan (salty), katu (pungent), tikta (bitter), and kashaya (astringent). This is considered to be nourishing and immunity-boosting.

Agni (digestive fire) is at the root of strength, health, longevity, and vital breath. When the right quantity and quality of food and drink are consumed, in keeping with prakriti (individual constitution).

Check out the top 10 foods that boost your immune system—>

Ayurvedic Herbs Traditionally Used for Immune Support 

• Giloy (Tinospora Cordifolia): Known as amrita (root of immortality), it is a powerful immunomodulator that helps combat infections and increases overall vitality.
  
• Ashwagandha (Withania Somnifera): An adaptogen, the herb helps manage stress, which is crucial for maintaining immune balance, while strengthening the body.
  Studies show that ‘withanolides’, the major constituent of ashwagandha, are responsible for its antimicrobial, antitumor, and immunomodulating properties. The antioxidants found in ashwagandha also play a vital role in its ability to boost the immune system.
  Ashwagandha also helps in lowering inflammation by reducing the number of C-reactive proteins in the body. This helps bring down the impact of chronic inflammation, which can otherwise trigger a negative immune response
  
• Amla (Indian Gooseberry): This is an excellent source of Vitamin C and antioxidants, rejuvenating the body and boosting natural defences
  
• Tulsi (Holy Basil): Often called ‘the queen of herbs’, it is anti-viral, supports respiratory health, reduces stress, and boosts immunity.
  
• Turmeric (Haldi/Curcuma Longa): This herb contains curcumin, which provides potent anti-inflammatory and antioxidant effects to support a healthy immune response. Research has proven that it is antifungal, antiviral, antioxidant, and anti-inflammatory.
  
• Liquorice (Yashtimadhu): Supports respiratory health and helps in reducing inflammation 

When Supplements May Help

Supplements help in the following conditions:

• Recurrent infections
• Weakness post-fever/ illness 

 (helps speed up recovery and corrects specific deficiencies.

To enhance immunity, one must supplement with rasayana such as Maharishi Amrit Kalash, Chywanprash, Bramha Rasayana and Amalaki Rasayana. 

Long-Term Resilience vs Short-Term Boosting 

Rasayanas nurture the body and bring about a balance of doshas and dhatus, promoting ojas (vital essence or vitality) to sustain immunity. This is not a quick fix. Instead, Rasayanas work gradually by strengthening the body’s natural immunity, vitality, and ability to resist disease over time and promote long-term vitality and resilience.

Strengthen Your Immunity Naturally – Explore Now