According to a 2021 study, it is recommended that the vitamin D level in our blood be above 25(OH)D. The research states ur levels need to be closer to 50 nmol/L (20 ng/mL). McBurney MI, Blumberg JB, Costello RB, Eggersdorfer M, Erdman JW Jr, Harris WS, Johnson EJ, Hazels Mitmesser S, Post RC, Rai D, Schurgers LJ. Beyond Nutrient Deficiency-Opportunities to Improve Nutritional Status and Promote Health Modernizing DRIs and Supplementation Recommendations. Nutrients. 2021 May 28;13(6):1844. doi: 10.3390/nu13061844. PMID: 34071268; PMCID: PMC8229216.
When limited calories are consumed, Ketosis is a danger. Burning high numbers of calories with limited water available may cause an athlete to go into ketosis.
Ketosis can cause:
Low blood pressure
Heart Disease (Heart issues)
The research, reported in the Armed Forces Medical Journal, stated that the soldiers needed to have rations that protected their bodies from entering ketosis or creating excess ammonium.
The government experimented with four different versions of rations for men exerting more than 2500 calories a day. The rations, in the form of a bar, were created to keep the men alive and sustain them for up to ten days without losing body mass. In addition to keeping them alive, the researchers wanted them to be able to function mentally at a high level which required a form of glucose.
The research also found that the soldiers needed sugar to function mentally.
The final bar formula consisted of a mixture of 72g percent protein, 75g carbs.
A recent survey found that coffee drinkers drink more than tea drinkers. According to the One poll study, coffee drinkers drink 3.4 cups a day while tea fans drink 2.7 cups during the day. As far as we can tell, there is no data on whether a coffee drinker switches to tea or a tea drinker mixes in cups of coffee.
Here is a press release that says 3 to 4 cups is beneficial.
Three to four cups of coffee a day linked to longer life: Three or 4 cups a day confers greatest benefit, except in pregnancy and for women at risk of fracture.
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