From an analysis of more than 2,800 adults, researchers found that the consumption of at least two 200-milliliter sugary or artificially sweetened soft drinks a day was linked to a twofold greater risk oftype 2 diabetes, as well as a form of type 1 diabetes known as latent autoimmune diabetes of adults (LADA).
Lead study author Josefin Edwall Löfvenborg, of the Karolinska Institutet in Sweden, and colleagues publish their findings in theEuropean Journal of Endocrinology.
It is estimated that around 29.1 million Americans - around 9.3 percent of the population - have diabetes.
Type 2 diabetes is the most common form of the condition, accounting for around 90-95 percent of all cases. This arises when cells in the body are unable to effectively use the hormone insulin - known as insulin resistance - causing blood sugar levels to rise.
Type 1 diabetes accounts for around 5-10 percent of diabetes cases. It is considered an autoimmune disease, where the immune system mistakingly attacks insulin-producing beta cells in the pancreas, leading to little or no insulin production.
LADA is a subtype of type 1 diabetes. It is a slow-progressing condition that typically develops later in adulthood, normally between the ages of 30-50 years.
LADA is sometimes referred to as "type 1.5" diabetes, as it shares some characteristics of type 1 and type 2; it is believed to be an autoimmune disease like type 1, but it also incorporates insulin resistance like type 2.
Soft drinks and diabetes risk
Previous research has demonstrated a link between high consumption of sugary drinks and type 2 diabetes; this effect has primarily been attributed to the weight gain associated with high sugary drink intake.
In this latest study, Löfvenborg and team set out to investigate whether artificially sweetened soft drinks might have the same effect, and whether soft drink intake - both sugary and artificially sweetened - might affect the development of LADA.
The study included 2,874 Swedish adults, of whom 1,136 had type 2 diabetes, 357 had LADA, and 1,137 were healthy controls.
The team analyzed the self-reported dietary data of each adult, looking specifically at the number of soft drinks consumed up to 1 year before a diabetes diagnosis. Participants' insulin resistance levels, beta cell function, and autoimmune response were also measured.
The researchers found that adults who reported drinking at least two 200-milliliter servings of soft drinks a day - whether they contained sugar or artificial sweetener - were twice as likely to develop LADA and 2.4 times more likely to develop type 2 diabetes, compared with those who consumed fewer than two soft drinks daily.
What is more, adults who consumed five 200-milliliter servings of soft drinks daily were found to be at 3.5 times greater risk of LADA and 10.5 times greater risk of type 2 diabetes, regardless of whether the drinks were sugary
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