Has anyone improved bone density without meds?

I wish they had a variety without Stontium, this has 5.5 mg of it.

@loplady therapeutic dose of strontium is 680mg. Maybe you can find out if 5.5mg affects the DEXA.

For those concerned about quality and integrity of supplements, I would suggest a subscription to ConsumerLab. I've used them for many years to identify and select supplements (along with foods and herbs) I was interested in. They do lab analysis of many different brands. I have been very surprised at the results of supplements from well known brands either having too much of a stated nutrient or not containing what the label claims or having high levels of cadmium and/or lead. In addition, they are up on all of the latest research on food, herbs and supplements and specify what those nutrients do in your body as well as cautions and concerns to consider. They are constantly updating their info with the latest available information. It is an excellent site and reputable source.
Be careful about buying supplements on Amazon if it is not handled directly through Amazon. There have been supplements containing content other than what is advertised and some laced with Viagra. The supplement brand NOW in particular has been counterfeited on Amazon along with others I'm sure. There is a small difference in the legitimate label vs the label of the counterfeited brand that enables you to tell.
I think Martin's statement re algae may have come from Consumer Lab's analysis several years ago as it was determined that AlgaeCal had a high amount of lead at that time. In years since, levels have come down some. Though our oceans are certainly polluted, we still eat fish and smaller fish have less heavy metals than larger fish and are still considered very healthy to consume so I wouldn't discount all from the ocean.

I prefer none and I just found Naturelo Bone Strength that does not have any Strontium.

I've read the strontium is a natural part of the algae. From WebMD: "Strontium is a mineral found in seawater and soil. In your diet, you get it mainly from seafood, but you can also get small amounts of it in whole milk, wheat bran, meat, poultry, and root vegetables. Strontium is similar to calcium. It seems to play a role in how your body makes new bone while it slows the breakdown of old bone. That means it may affect how strong your bones are. Some research says that women with osteoporosis may not absorb strontium as they should."

I found this on Martin's MelioGuide site: "ConsumerLab has tested AlgaeCal on at least two occasion. Most recently in 2017 and earlier than that, in 2015. ConsumerLab has not found toxicity with this product. What they have found is that AlgaeCal has had higher levels of lead than they consider acceptable. ConsumerLab is using some of the most stringent requirements in terms of purity."

Algaecal has a calcium without Strontium included. The calcium is made from algae. And my doctor recommends calcium from plant sources as they are absorbed better.
The other thing to be aware of is spacing out calcium tablets. The body can only absorb so much at one time. Also be aware of foods that also reduce calcium absorption- nuts, spinach and any food with oxalates. If you like nuts and spinach, eat those at a time when you are not taking your calcium supplements.

@teb thank you for your Consumer Lab tip!!!! Looked at it yesterday. Even if you don’t join , there’s great information provided. I am considering joining!! There is a small monthly fee, as I recall around $4 / month.

Strontium is not a actually a nutrient. It is a metal and it's not something that the body needs at all. We do get some through our diet as it is present in the soil (just like we might get nutrients along with non-nutrients like lead and cadmium). It has an affinity for the bone. Calcium is a necessary nutrient for our bones, strontium is not. So, best not replace something the body needs with something it does not.
As an aside, WebMD is not necessarily the best source for information as it is a highly commercial site and may have sponsors in the supplement industry. Mayo, Mount Sinai School of Medicine, Harvard, ConsumerLab and of course, PubMed (for the actual research) are all good sources to check to verify info. As far as strontium goes, info is all of the place on the web.

You are most welcome! Glad you took a look around the site (and seem to be as excited as I am about sharing it!). It's an amazing source of info. The amount of lab testing and research analysis they do is astounding. A highly valuable source, well worth the membership.