We spoke with a pair of cousins, one an Army veteran, the other a current member of the Navy, about some of the toughest situations they've found themselves in. Army basic training, according to Mates, is all about discipline. It's about knowing your role and not stepping out of line. And if you do, well, you pay a price. Mates said, In basic training, they call it 'getting smoked.' Push-Ups until you puke. I was always getting smoked.
Caffine is the most popular and probably the most studied of all drugs, and serious adverse effects in real life have resisted demonstration. There are pop claims about caffeine interfering with absorption of iron and vitamin d; if there were any real effect on real human beings, it would be obvious by now.
Complications With Certain Medications. According to the University of Maryland Medical Center, vitamin D taken at the same time as cholesterol lowering drugs can cause the drug to be less effective. (Ref 3) As well, bile acid sequestrants, also used to lower cholesterol, can cause low vitamin D levels. Similarly, certain weight loss drugs that reduce the amount of fat your body absorbs from food can cause low vitamin D levels. The medication may affect how readily your body absorbs vitamin D.