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Once the damage is done, it’s done. In humans, short periods of loneliness rarely have any long-term adverse effects, but persistent loneliness is correlated with increased risk of Alzheimer’s disease, depression and dementia, as well as poor sleeping habits (which in turn often have adverse psychological consequences).
In other words, natural human communities and personal social networks seem to have a typical size of about 150.
When swaddling your baby, make sure to allow room for the hips and legs to move freely. If you wrap your baby too tightly around the hips and legs, it can interfere with proper growth and joint development. Your baby’s legs should be able to bend up and out into a frog leg position. It’s time to stop swaddling when your baby first shows signs of rolling over, generally around 4 months. Ideally, babies need to be able to control their arms when rolling. But they can’t do that when swaddled.
Mayo Clinic Guide to Your Baby's First Years
Kelsey Klaas
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