10/20/2026
I don’t ever recommend free feeding a pet dog, and I keep my dogs lean because it results in better health for longer.
𝗧𝗵𝗲 𝗟𝗮𝗻𝗱𝗺𝗮𝗿𝗸 𝗦𝘁𝘂𝗱𝘆 𝗧𝗵𝗮𝘁 𝗖𝗵𝗮𝗻𝗴𝗲𝗱 𝗛𝗼𝘄 𝗪𝗲 𝗧𝗵𝗶𝗻𝗸 𝗔𝗯𝗼𝘂𝘁 𝗖𝗮𝗻𝗶𝗻𝗲 𝗟𝗼𝗻𝗴𝗲𝘃𝗶𝘁𝘆
This study followed 48 Labrador Retrievers throughout their lives, and its findings helped establish a lasting connection between nutritional management, healthy body weight, and longevity in dogs.
Here’s what the research found:
𝗟𝗼𝗻𝗴𝗲𝗿 𝗹𝗶𝗳𝗲𝘀𝗽𝗮𝗻: Dogs fed 25% less food than their pair-matched controls had a median lifespan of 13.0 years, compared with 11.2 years in control-fed dogs—a difference of 1.8 years.
𝗗𝗲𝗹𝗮𝘆𝗲𝗱 𝗼𝗻𝘀𝗲𝘁 𝗼𝗳 𝗰𝗵𝗿𝗼𝗻𝗶𝗰 𝗱𝗶𝘀𝗲𝗮𝘀𝗲: Food-restricted dogs developed age-related chronic diseases later in life, with osteoarthritis among the particularly notable conditions.
𝗕𝗼𝗱𝘆 𝗰𝗼𝗺𝗽𝗼𝘀𝗶𝘁𝗶𝗼𝗻 𝗺𝗮𝘁𝘁𝗲𝗿𝘀: The study linked greater fat mass and declining lean body mass with mortality, highlighting the importance of maintaining a healthy body composition.
𝗟𝗼𝗻𝗴-𝘁𝗲𝗿𝗺 𝗻𝘂𝘁𝗿𝗶𝘁𝗶𝗼𝗻 𝗺𝗮𝘁𝘁𝗲𝗿𝘀: The dogs followed their respective feeding regimens from puppyhood, emphasizing the potential importance of nutritional management throughout life.
Although initially published in 2002, this is still as important today.
Because healthy weight management is more than an aesthetic goal. It is an important component of preventive veterinary care, with potential implications for both lifespan and healthy ageing.
For veterinary teams, this research reinforces the value of regularly assessing body condition, individualizing feeding recommendations, and discussing nutrition with pet owners before excess weight becomes a problem.
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Kealy RD, et al. Effects of diet restriction on life span and age-related changes in dogs. JAVMA. 2002;220(9):1315–1320.
Lawler DF, et al. Diet restriction and ageing in the dog: major observations over two decades. British Journal of Nutrition. 2008;99:793–805.
