Should You Take Vitamin D3 and K2 Together?
D3 and K2 are often sold as a pair. Here's the science behind the combo, what the trials actually found, and who should be careful.
D3 and K2 are often sold as a pair. Here's the science behind the combo, what the trials actually found, and who should be careful.
What daily vitamin K2 actually does in your body, what the research shows (and doesn't), and who should check with a doctor first.
Should you start elderberry in the fall or wait until you feel sick? Here is what the research says about timing, and how to fit it around your flu shot.
Why so many elderberry products add vitamin C and zinc, what each ingredient’s evidence looks like, and how to keep your totals in a safe range.
Thinking about elderberry for your child? Here is what research covers in kids, how to read age labels, the zinc and honey fine print, and questions for your pediatrician.
Many people take elderberry daily through fall and winter. Here is what research says about daily and long-term use, and what to watch in combination products.
A trial-by-trial look at elderberry and the flu: the promising early studies, the meta-analysis, and the 2020 trial that found no benefit.
Syrup, gummies, lozenges or homemade? Here is how elderberry formats compare on research, dosing, convenience and safety.
Black elderberry, or Sambucus nigra, is the species behind most elderberry supplements. Here is what the plant is, what is in the berries, and how it differs from other elders.
Raw elderberries, leaves and stems can make you sick. Here is why, which parts are the problem, and how cooked and processed elderberry differs.
Elderberry is widely used, but it isn’t for everyone. Here is who should skip it or check with a doctor first, and why.
Elderberry is everywhere once the weather turns. Here is what it is actually good for, what it is not, and how strong the research really is.
Low B12 can affect the brain and mood, but taking B12 isn't a treatment for anxiety or depression. Here's what the evidence actually shows.
After 50, many people absorb less B12 from food. Here's why it happens and why experts recommend a different approach.
Sugar-free or regular apple cider vinegar gummies? Here's how they differ on sugar, sweeteners, digestion and added nutrients, and how to choose for your routine.
Long-term metformin use is linked to lower B12 levels. Here's what the research shows and what diabetes guidelines recommend.