' An Act to preserve daylight and provide standard time for the United States ' was enacted on March 19, 1918. [See law] It both established standard time zones and set summer DST to begin on March 31, 1918. Daylight Saving Time was observed for seven months in 1918 and 1919.
Nitrate-rich foods include lettuce, parsley and spinach. âLeafy vegetables contain chemical nitrate that improves heart health,â the Mail Online reports. In a recent study, researchers looked at the effects of a nitrate-rich diet on rats.
And if you think you can avoid nitrates and nitrites by eating so-called ânitrite-and nitrate-freeâ hot dogs and bacon, donât be fooled. These products use ânaturalâ sources of the same chemical like celery and beet juice and sea salt, and are no more free from nitrates and nitrites than standard cured meats.