My opinion on the necessity for taking daily supplements: It is over-rated and in most cases an unnecessary waste of money. If you are healthy and don't have some unusual circumstances or medical condition, then you will get what your body needs by eating a reasonable variety of whole foods. For most of my weight loss period I took no supplements at all. Sometimes I took a mulivitamin to sort of cover the bases, but I wasn't consistent with that most of the time.
During my second year eating LCHF I found my LDL cholesterol had doubled compared to what it was the year before. Reading up on that, thyroid issues were among the possibilities as a contributing factor. So I started taking a few thyroid boosting supplements for a while (I can't remember what they were). I had my thyroid levels checked and they were OK. I stopped taking those supplements.
Then last January I had a heart calcium scan done to see where I was at with my heart health. I had been morbidly obese and sedentary for decades. I ate a junky diet for decades. I smoked in my youth. Yet I hoped for a good calcium score. I was disappointed the results of that test, to say the least. You can read all about that
HERE in this thread starting at post #39. Rather than repeat all of that, I'll just talk about my decision to start taking supplements as one who is among those considered at a higher risk for a heart attack. So I may have lost the weight, but I am not 100% healthy. I have significant calcification going on in my arteries. I wanted to know if there was something that could be done about that. Can it be reversed? Can I stop the progression? Drawing information from various sources, I realized that I was already doing the best things for reduced risk. I eat an anti-inflammatory LCHF diet of mostly real, whole foods, and I exercise regularly (daily). But there was also some advice about supplementation. I'll give a shout-out to Ivor Cummins and his terrific contributions to this issue. I pretty much adoped what he recommends. I currently supplement with...
Vitamin K2 - MK-7 (100 mcg)
Vitamin D3 (2000 iu)
Magnesium (500 mg)
and I threw in a daily multivitamin to cover anything else. I also take a daily low-dose aspirin, as prescribed by my doctor.
So Mr. "Supplements are overrated" is now religiously taking supplements. A CVD scare is a good reason to. In my reading up on this CVD issue I learned that vitamin K2 (a recently discovered sub-class of vitamin K), working with vitamin D plays a major roll in the proper distribution of calcium in the body. It is also understood that the amount of K2 in the typical western diet is not what it once was. My old diet was very likely vitamin K2 deficient. I read the details on a well conducted 3 year study of K2 done in Holland a few years ago. The results for improved CVD risk taking vitamin K2 supplements were promising. I don't know if these supplements are doing me any good, but I'd rather be safe than sorry.
I'm planning on having another calcium scan done next year. I hope to see little to no progression in my calcium score. I will be elated if it actually improves. My current lifestyle, along with this short list of supplements, is the best way I can think of to reduce my risk of a heart attack. Time will tell.