Nutritional supplements
Learning Center
Rheumatoid arthritis: Can it affect the eyes?
Although rheumatoid arthritis is primarily a joint disease, it occasionally affects the eyes.
Too much vitamin C: Is it harmful?
Vitamin C is an essential nutrient, but too much carries its own risks.
Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
Triple X syndrome
Females with this genetic disorder have three X chromosomes instead of two. Symptoms can be mild or include developmental delays and learning disabilities.
Vitamin D toxicity: What if you get too much?
Understand the risks of too much vitamin D, including a toxic reaction.
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
Rheumatoid arthritis: Can it affect the lungs?
Although rheumatoid arthritis primarily affects the joints, it can also affect the lungs.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Obstructive sleep apnea
Learn the signs that point to this common and potentially serious sleep disorder. And find out the treatments that can help you sleep better.
Vaginal atrophy
Read about this condition that causes vaginal and urinary symptoms, often after menopause. It's also called genitourinary syndrome of menopause.
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