As well as these scientific studies documenting the benefit of kefir, there are also many anecdotal reports of the health benefits of drinking kefir. (probiotics-help.com)
The article advises to keep drinking the kefir as it may take your body about a week to adapt and optimize as such. (yourkefirsource.com)
I used the recipe you have posted here and amazingly, my kids enjoyed drinking kefir smoothie than an ordinary powdered juice. (benefitsofkefir.com)