I did not read every post. I read enough to see a consistent body of thought to the effect that someone active, going out in the sun everyday, is getting adequate amounts of Vit. D. Wrong. Shorts and T-Shirts dom't even come close to exposing enough skin surface to the sun to receive adequate amounts of sun in North America. Speedo's and/or String Bikini's are more like it. But, it has to be said, significant populations of people cannot even make use of the sun levels found in North America without skin damage (sunburn).

My wife (and nutritionist) started giving me 5,000 IU vit. D everyday (most days) around 2 years ago. When I was tested for vit. D during a pre-surgery physical last year I was at the bottom of the normal range. My wife has upped my regimen to 15,000 IU. The poster advising caution over 5,000 IU is being overcautious. The poster taking 50,000IU... well I hope that's a typo, Ill leave that at that.

Nutrition is critical in 2016. None of us reading this forum can afford eat the way our parents did! If you want to live as long and as healthy a life as is possible with the onslaught of environmental challenges that are a given in most of the U.S. and also a good part of the rest of the world then hyper-nutrition is a good place to start. Critical need not mean 'complex'. Taking a multi-vitamin everyday (most days anyway) is hardly hard to manage. Considering it important enough (critical enough) to your longevity to introduce into your lifestyle... well that's the thing, isn't it.

I hope you are listening, because I am very serious. You don't want to get seriously sick in 2016. They don't have the science to save you. If you are very lucky you will pull through despite them (they will take the credit). You won't die, not right away anyway, but you will be destroyed financially, with or without health insurance. Our (wife and I) approach to nutrition is much less about feeling good and having more energy for bike riding, and much more about supporting as strong and healthy an immune system as is possible. Luckily, attention to the latter takes care of the former at the same time.

I don't have anything against Wal-Mart per se. I used to take their 'One Source' multi-vitamins, but I'm just putting it out there. Prevention is way cheaper than cure, and that being the case, why cheap out on Prevention? The cost of a comprehensive multi-vitamin formula like a Nature's Way "Alive" might be much higher than from a dept. store or grocery chain product line, but IMO it goes the extra mile for you. FWIW.

P.S. [MENTION=432729]nashvillebill[/MENTION]. I'm two years older than you. The real ticket to the lift you are looking for is a multi-formula with a big hit of B-Complex (200% of RDA). Even a decent B-Complex formula on its own. That will put the cha-ching in your cadence that might be lacking as you watch the 20 something blast past, mumbling "on your left"...