Causes of Weakness in Legs. Weakness in the legs can be caused by many conditions and diseases. Weakness means there is less strength in the muscles than there should be. Some people mistake fatigue as weakness, but technically in the medical world, they aren't the same. People with the flu or cancer, for example, may say they feel weak when they're referring to sluggishness.
1 (Outside of the body, Lactobacillus acidophilus is the probiotic that is found in some yogurts.). 2  Foods that contain probiotics include: some juices and soy drinks, fermented and unfermented milk, buttermilk, some soft cheeses, miso, tempeh, kefir, kim chi, sauerkraut, and many pickles.
While probiotic-foods have live bacteria, prebiotic foods feed the good bacteria already living in your gut. You can find prebiotics in items such as asparagus, Jerusalem artichokes, bananas, oatmeal, red wine, honey, maple syrup, and legumes.hoose the unpasteurized kind, because pasteurization (used to treat most supermarket sauerkraut) kills active, good bacteria. This sour, salty food -- and the similar but spicy Korean dish, kimchi -- is also loaded with immune-boosting vitamins that may help ward off infection.