Winter gets a bad rap. It's called the flu season, the cold season, and the season when contagious diseases abound. Yet according to Maharishi Ayurveda, winter doesn't have to be this way. Winter is actually the best season to improve immunity. It's not a weakening season if you know how to strengthen immunity.

To understand how to improve immunity in the winter season, you first need to understand the unique concept of immunity in Maharishi Ayurveda. Bala, which literally means "strength," is the Ayurvedic word for immunity. 

1. Hereditary (Sahaj) - the innate level of immunity, which you are born with.
2. Seasonal (Kalaj) - fluctuating levels of immunity due to the change of seasons, different stages of life, and planetary cycles.
3. Established (Yuktikrit) - a balanced, permanent level of immunity that can be realized by following an Ayurvedic diet and lifestyle. This type of immunity can be "planned" using dietary and lifestyle principles and herbal preparations.

If someone is born with an innately low level of immunity, that fact cannot be changed. So that's why in Maharishi Ayurveda, we focus on strengthening the second type of immunity, which fluctuates with the seasons, age, and planetary cycles. One reason that winter is a good season for building immunity is that the digestion is stronger in cold weather. Just as your home's heating system works harder in cold weather, so your inner digestive fire stokes up when the air turns chilly.

Winter is the season when nature is ready to nurture us. Due to the digestive level being very high, people feel hungrier, and can actually digest food better in winter, thus nourishing their bodies more.

People just think this season is bad for immunity because as appetite increases, people start eating more junk food and heavy, hard to digest foods, and thus weaken their immunity. But it's important to understand that we are creating the bad immunity, not that nature is giving us that.

For this reason, it's more important that people eat immunity-boosting foods in winter, and that they follow the Ayurvedic daily routine. This should be the regimen in winter, to nourish the mind and body by getting more rest and eating well. Other seasons are better for purifying, but winter is the time to build up and nourish all systems--the hair, the nails, and the skin. It's also the best season for taking Rasayanas and herbal products, because the high level of digestion helps people to assimilate them better.

Immunity-boosting Foods and Lifestyle Tips for Winter

In general, immunity-boosting foods include those that are fresh, organic, easy to digest, pure and wholesome. These include fresh, organic milk and yogurt, vegetables, fruits, whole grains, and ghee (clarified butter).

Foods that are hard to digest should be avoided if you want to increase your immunity. Commercially processed foods, as well as canned, frozen, and packaged foods are old and difficult to digest, so they weaken immunity. Leftovers, foods grown with chemicals, and foods laced with preservatives tax the digestive system and clog the channels of circulation, creating a sluggish, compromised immune system.

Foods that nourish and balance the body in the cold, dry, winter season are the sweet, sour and salty tastes. It's best to eat less of the astringent, bitter, and pungent tastes in winter, although all six tastes should be included in your diet. Warm, home-cooked, unctuous foods are ideal, as long as they are not deep-fried and are cooked with easy-to-digest oils such as ghee or olive oil. Avoid cold or ice-cold foods, as cold foods and drinks douse the digestive fire and decreases immunity.

Lifestyle also impacts immunity. Staying up late, working at night, eating at irregular times, exposing the body to stress and fatigue, and sleeping during the day can all affect the digestion and body rhythms - and thus compromise the immune system. That's why it's important to follow the Ayurvedic daily routine, to keep the digestive system and other bodily rhythms working smoothly, and thus keeping the immunity high.

In winter, when the days are shorter and the nights are longer, it's natural for the body to crave more rest. Try going to bed a little earlier, and you will wake up with more vitality and freshness. Winter is a more inward season, when nature is at rest, so you can take advantage of this natural tendency by giving the mind and body extra nourishment in winter.

Doing a daily self-massage (abhyanga) will also help enhance immunity. Self-massage stimulates all of the organs of the body, flushes out impurities, and builds resistance to stress and disease.

If you follow the Ayurvedic dietary guidelines and lifestyle for each season, you can develop an established, permanent state of immunity, when sickness is no longer a threat. This is the third level of immunity (Yuktikrit), which is the goal of Maharishi Ayurveda. This is what "Bala" really means, "a state without disease".

So this winter, try giving your immunity a shot in the arm - and spend the cold season staying warm and healthy.     

Disclaimer: 
Information provided in this article is for the sole purpose of imparting education on Ayurveda and is not intended to diagnose, treat, cure or prevent any disease. If you have a medical condition, please consult your physician.