One difference is that the amount of vitamin B12 in Centrum Silver (25 mcg) is much lower than the amount used in the positive studies (100 and 500 mcg, respectively). Loss of cognitive function is a well-known effect of vitamin B12 deficiency.
Click on the download link. Allow the song to download to your cell phone. Close your web browser and locate the song on your cell phone (usually under sounds, music, mp3s, or multimedia). Select the song to play it.
With a Spotify Premium account, you can download up to 3,333 songs on your computer or mobile device. These songs will then be available to you even if you don't have an Internet connection. At the time of publication, you can download songs on up to three devices, for a total of 9,999 songs, if desired.