I like to think of the Swiss cheese model where each different action is going to provide a layer of protection against infection, but it isn’t going to make you invincible. In layers of Swiss cheese there are holes in each slice, but when you layer them together, they overlap and fortify by filling the gaps.
Areas to consider include a healthy balanced diet including plenty of plant foods, regular daily movement and different types of physical activity, getting to sleep at a regular time and improving your sleep quality, and working to reduce your stress levels.
With these foundations in place, think about supplementing with vitamin D, which we should all be taking at this time of year. We can get this through fortified foods such as Actimel.
Actimel contains vitamin D and B6, which helps support the normal function of the immune system when consumed as part of a balanced diet and healthy lifestyle.