Dull strands, flaky scalp, or sudden shedding? Experts break down how vitamin A affects hair health, how much you really need ...

Below, we break down the main types of vitamins you might take in supplement form, and the ideal times to take them, ...

Vitamin K refers to a family of fat-soluble compounds that includes vitamin K1 (phylloquinone) and vitamin K2 (menaquinones). Vitamin K is needed for blood clotting, bone and heart health, and more.

Fat-soluble vitamins, including vitamins A, D, E, and K, rely on fat to absorb properly, “which is why pairing them with a meal containing healthy fats, like avocado, nuts, or olive oil, can be ...