Compared to Facebook and Twitter, Instagram has a reputation for being unfriendly to older people.
Just look at the list of the app's most popular accounts: pop stars and models command the biggest fanbases.
But David Cyril, a humble 85-year-old grandfather from Lancashire, England, has become an overnight sensation on Instagram for a surprising reason.
A Man On A Mission
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Hello! I'm David , I have been a member of Slimming World for a good few years but after initially losing 2 stone, I have since crept back up to my start weight. My daughters suggested that I start this account after one of them posted a picture of me on her own Slimming World account which received a lot of likes and positive feedback , I think starting this account will give me the encouragement I need to reach my target. Thanks for stopping by!
In his debut post, Cyril explained that his weight loss journey with Slimming World (a weight loss club similar to Weight Watchers) inspired him to join Instagram.
"I have been a member of Slimming World for a good few years but after initially losing [28 pounds], I have since crept back up to my start weight," he shared.
"My daughters suggested that I start this account after one of them posted a picture of me on her own Slimming World account which received a lot of likes and positive feedback."
Ever since, Cyril has been sharing photos of his healthy meals, dieting advice, and snapshots of his daily life with a growing number of fans.
Despite joining Instagram just a month ago, Cyril already has more than 40,000 followers.
Cyril obviously knows his stuff, since he was crowned "Mr. Sleek" by his local Slimming World group both this year and in 2015.
He even shared an encouraging message with his followers after gaining 1.5 pounds following a few cheat meals with his grandchildren.
"I'm still smiling as tomorrow's a new day," he wrote. "I'm already feeling positive for the next weigh in! Hope you all have a lovely week, David."
Cyril is proof that you can still enjoy small pleasures on a diet, as he's shared photos of himself enjoying macarons, carvery, and snacks at local soccer games while still losing weight.
But he's also sampled trendy weight loss meals, like overnight oats. "Very pleasantly surprised," he weighed in on the snack, "will definitely be having them again."
So far, Cyril is down 13 pounds again, but is aiming for an impressive 42-pound weight loss.
He says his goal is to stay "Mr. Sleek," so he can be in good shape for his daughter's wedding next year.