Our immune system is vital in keeping us healthy, but it can become weakened due to lifestyle factors, stress, or underlying health conditions. Recognizing the signs of a weakened immune system is the first step in taking action to support and strengthen it. Our immune system is vital in keeping us healthy, but it can become weakened due to lifestyle factors, stress, or underlying health conditions. Recognizing the signs of a weakened immune system is the first step in taking action to support and strengthen it. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle