Vitamin A explained: daily needs, food sources, deficiency signs, upper limits, why high-dose supplements are unsafe in pregnancy and medicine interactions, per NIH.

Potassium explained: daily adequate intake, best food sources, signs of low potassium, who is at risk of high levels, salt substitutes and medicine interactions, per NIH.

Omega-3 fatty acids explained: ALA, EPA and DHA, food sources, daily amounts, heart and pregnancy advice, supplement safety and interactions, based on NIH guidance.

Vitamin C explained: how much you need daily, best food sources, deficiency signs, who is at risk, the safe upper limit and interactions, based on NIH guidance.

Magnesium explained: how much you need each day, best food sources, deficiency signs, who is at risk, supplement upper limit and medicine interactions, per NIH guidance.

Calcium explained: how much you need each day, best food sources, who falls short, supplement types, safe limits and medicine interactions, based on NIH guidance.

Zinc explained: how much you need each day, best food sources, deficiency signs, who is at risk, the safe upper limit and medicine interactions, based on NIH guidance.

Vitamin B12 explained: deficiency symptoms, how much you need daily, best food sources, who is at risk and which medicines can lower B12, based on NIH guidance.

Folic acid and folate explained: daily needs, best food sources, deficiency signs, upper limit and why folic acid matters before and during pregnancy.

Vitamin D explained: how much you need each day, best sources, deficiency signs, who is at risk and the safe upper limit, based on NIH guidance.