Find out how bad habits can weaken your immunity | Cal-C-Vita

Share on :

Reducing the negative impact of lifestyle factors on immune health

With our pace of life only getting faster, our immune health becomes endangered. As shown by numerous studies1, our everyday choices have a great impact on the way our immunity works. Stress, rush, lack of sleep, unhealthy diet - all these lifestyle factors add up and can weaken your immune system. That’s why making healthy lifestyle choices and turning them into good habits is crucial in reducing the negative impact of lifestyle factors on our immunity. But which factors should you pay attention to the most? Read on to learn about the most common factors which can lower your immunity.

Young woman stretching after a good night's sleep

Lack of sleep

Keep in mind that it isn’t just the “quantity” of sleep that affects your immune system, but also the quality of it. You need to sleep the right number of hours, and you need to sleep peacefully if you want to bolster your immune system. Adults need between 7 to 9 hours of undisturbed sleep2 in order for the body to maintain a healthy immune response. If you aren’t sleeping well, you may want to try relaxation techniques like meditation or yoga. Switching off all screens about an hour before bedtime is also a good idea as it’s generally easier for your brain to go into sleep mode when there’s no bright light.

Insufficient physical activity

Regular physical activity strongly affects your immunity and helps to avoid infections3. Conversely, if you are not active at all, you are holding your body’s immune system back, not letting it build up strength. That’s why it’s important to get in the habit and to stay active. If you have a sedentary lifestyle, start working out, training, exercising, jogging at least a few times a week. Even as much as just walking counts, and pays off in the form of a bolstered immune system that’s better at fending off infections.


Even hanging out with smokers while they are at it may hinder your immunity. Your body’s immune power will be greatly diminished because substances found in cigarette smoke lower its overall capacity to resist infection. If you want to enhance your immune system, don’t start smoking. If you are a smoker, consider that your white blood cells are constantly on the defensive, fighting the injuries cigarette smoke is causing you. Quitting smoking will help your immune system return to its normal function.

Poor diet

Constantly in a rush, no time for quality food? That’s a huge risk to your immunity. Along with stress and sleep, nutrition is a key factor linked to your body’s immune response4. Food is the most basic source of energy and resources for your immune health. So if you’re not eating healthy, your immune system becomes weak – it is that simple! Drop the bad habit of eating fast-food and enjoy tasty and nourishing meals instead. Make sure you include plenty of fresh fruits and vegetables – the foundation of a healthy diet!

Lack of vitamin and mineral supplementation

There are various supplements available on the market which allow you to enhance your immunity. If you lack certain vitamins or minerals, you run the risk of having a weak immune system. While the best way to get nutrients is through diet, you can also add a vitamin and mineral supplement like Cal-C-Vita® if you think your diet might not be balanced.

The above are the most common lifestyle factors which affect your immune health. As proper control and monitoring is key to bolstering your immunity, it is time to drop these bad habits!


  1. How to boost your immune system, Harvard Health Publishing.
  2. How many hours of sleep are enough for good health? Answer From Eric J. Olson, M.D.
  3. How to prevent infections. Harvard Medical School, 2016. (Accessed 10/02/2020, at
  4. (Song et al, 2019; Patel et al 2012 and Gombart et al 2020). 


How Cal-C-Vita®
helps support your
immune system




Your body is equipped with powerful natural defences and your immune system has many ways of dealing with threats from bacteria and viruses. The Immune system is made up of three main defences mechanisms; Physical barriers (skin and mucosa), cellular barriers (white blood cells) and antibodies. Nutrients such as vitamins and minerals are essential to the health and function of this complex network.

In our fast-paced world of fast food and pre-cooked meals, it may be challenging to consume adequate amounts of fruits and vegetables delivering all the vitamins and minerals we need to fully support our body functions. An inadequate intake of vitamins and minerals can negatively affect the immune system and overall health. That’s where Cal-C-Vita® comes in. Our range of Vitamin C products are designed to help support your immune system.

Learn more


Cal-C-Vita® for a healthier immune system

You need to look after your immune system. Even though it may not feel like it, your immune system works 24 hours a day. Just as a plant needs water and sunlight, your immune system needs regular nourishment to support the body’s defence systems.

Together with a healthy lifestyle including physical exercise and good nutrition, supplements like Cal-C-Vita® provide the foundation for a strong immune system all year round.






80 years of vitamin C expertise

In 1934, we pioneered the world’s first Vitamin C supplement, and we’ve been helping people keep their natural defenses in top shape for over 80 years. Today our range of innovative supplements helps to support your immunity every day.


Build your immunity

Looking for ways to strengthen your immune system? Check out helpful articles on immune support.