A recent report by the Economic and Social Research Council said that more Britons live alone than ever before - and loneliness seems to be the one thing all of us dread.
But does living alone necessarily mean we're lonely?
Jenni is joined by Helen Wilkinson, a social commentator and founder of Genderquake and Professor Christina Victor, a gerontologist at Reading University.
On Wednesday our phone-in will be all about loneliness, so if you have direct experience of it, or views about it - we'd like to hear from you. You can email us or call us on 0800 044 044.
Please remember to leave your contact details so that we can get back to you.
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