' 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.
Even though adding nitrates to cured meats is no longer necessary with better production and food storage methods, which have decreased the potential for food-borne illness, they are still used in cooked meats to maintain the familiar pink color and cured flavor.ven nitrites themselves are sometimes added directly to meat to speed up the curing process. When nitrates are consumed, they convert in the body to nitrites, which form nitrosamines, a known powerful carcinogen. Eating cured meats containing nitrates may also double your risk for lung disease.