The Key to Fighting Colds and Flu by Joseph McCaffrey,MD,FACS

It seemed like it happened every time, and for the longest while I didn't think I could do anything about it. I'd be going along feeling fine and healthy. Then I'd have a critically ill patient under my care. After a few days of stress and interrupted night's sleep, WHAM -- I'd come down with a heck of a cold.

At first, I didn't know what specific steps anyone could take to keep their immune function at an optimal level.

As a physician, I was of course aware of the components of the immune system and their functions. However, like many aspects of wellness, traditional medical training doesn't emphasize how we can support immune function in normal day-to-day life.

When I starting exploring complementary medical treatments, I was surprised at how much research had been done in this area. Once I started applying what I learned, those stress-related colds became a thing of the past. I'd like to share some of what I learned about building up a healthy immune system and fighting off those nasty bugs with you now.

Our immune system is a complex, interacting web of chemical and cellular components that serves to protect us against potential invaders such as bacteria, viruses and cancer cells. Although we often talk about immune "boosting," what we really want is a perfectly balanced immune system (an overly active immune system can damage the body, but that's another story).

A healthy lifestyle supports vitality, including immune health. It's the foundation of any wellness program.

But before we look at how we can strengthen immunity, it's important to understand the specific factors that affect the immune system. These include nutritional deficiencies, infections, trauma, toxins (all too common in today's world), radiation exposure, emotional state and, very importantly, stress.

Stress causes an increase in the hormone cortisol. Short term, this can be beneficial, but long term, an elevation of cortisol is a powerful suppressor of immune function. Stress was one factor that weakened my immune system when I was taking care of those critically ill people.

Fortunately, several behavioral interventions counteract the effects of stress on the immune system. You are probably aware of meditation as a stress management tool. Other proven interventions include clinical biofeedback, relaxation techniques, hypnosis, behavior modification, and visualization and imagery techniques. The techniques that I've personally found most useful are taught by the Institute of HeartMath.

The main thing is to learn a technique that appeals to you and then use it. Increasing stress is part of today's world, and if we don't take steps to counteract it, we'll pay the price with illnesses.

Another factor that affects immunity is sleep, or rather, the lack of it. Even modest sleep deprivation has a profound effect. For example, a study in the Archives of Internal Medicine reported that people who had less than 7 hours sleep a night were more than three times as likely to come down with a cold during the course of the study, than those who had 8 or more hours of sleep. Not only that, difficulty falling asleep and interruptions in sleep during the night greatly increased the risk of developing a cold.

It's easy to see why I got sick so easily when I was worrying about a patient and not getting enough sleep. Managing stress and getting enough sleep is a solid start. Here are some other things you can do to keep your immune system functioning at its best.

Get more exercise. Exercise not only strengthens your muscles, it strengthens your immune system. I won't belabor the point here, but a strengthened immune system is yet another reason to make exercise a regular part of your life.

One point of caution is to keep in mind that exercising steadily for over 90 minutes is counter-productive. At that level of intensity, the exercise itself becomes a type of chronic stress. For most of us this is not an issue, but it certainly is for endurance athletes.

Eat a healthy diet. A healthy diet should be part of any wellness program. Any nutrient deficiency suppresses immune function, as does an excess consumption of sugar and refined foods. Emphasize a wide variety of fruits and vegetables and include healthy fats from adequate amounts of lean protein.

Add immune enhancing supplements. Although a healthy diet is the foundation, supplements can be of benefit as well. Taking a high potency multivitamin and mineral supplement is a reasonable first step. Zinc and selenium are two minerals that are particularly important for immune system support. Be sure your supplement includes them.

Perhaps the most important vitamin to be aware of regarding your immune system is vitamin D -- it affects the immune system at multiple points and is also deficient in many people.

We need exposure to sunlight to generate our own vitamin D. Most people, especially those in the northern states, don't get nearly enough exposure.

Fifteen to 20 minutes of exposure to bright sunlight daily is enough to maintain adequate vitamin D levels. Barring that, you should consider taking a supplement. The amount in a typical multivitamin won't be nearly enough to correct a deficiency. You can have your blood level of vitamin D checked, but it is generally safe to take 1000 to 2000 units a day. Some people require even more.

Keep your digestive system healthy. Many people don't realize that the gastrointestinal tract plays a very important role in overall immune function. Although research into this area is only just beginning, it is clear already that the type of bacteria residing in our GI tract makes a difference.

For this reason, it's a good idea to periodically take a course of probiotic (beneficial bacteria) supplements to help maintain a healthy GI floor. This is especially important if you need to take antibiotics for any reason.

You don't have to be a victim of the latest cold or flu outbreak. If you heed the advice I've just given you, you can count on your immune system to keep you healthy and well.

(This article appears courtesy of Early to Rise's Total Health Breakthroughs, offering alternative solutions for mind, body and soul. For a compliment subscription, visit http://www.toatalhealthbreakthroughs.com)