T1D Numbers

Type 1 diabetes in Tennessee

T1D Index estimates for 2025 · United States

An estimated 32,417 people are living with type 1 diabetes in Tennessee in 2025. Each year about 1,205 people are newly diagnosed and 373 people with T1D die. A further 10,153 people would be alive today had they not died early from type 1 diabetes.

People living with T1D

32,417

New diagnoses in 2025

1,205

Deaths in 2025

373

Missing people

10,153

Expected age at death, 10-year-old with T1D

61.9years

How many people have type 1 diabetes in Tennessee?

32,417 people in Tennessee are living with type 1 diabetes in 2025, or 443.3 per 100,000 people. That is close to the United States average of 435.7 per 100,000 and higher than the global average of 115.5. Tennessee has the 16th-largest number of people living with T1D of the 50 states and the District of Columbia.

For every 100 people living with T1D in Tennessee, another 31 are missing: people who would be alive today had they not died early from T1D.

How many children and young people have type 1 diabetes in Tennessee?

4,429 people younger than 20 were living with type 1 diabetes in Tennessee in 2024 (95% CI, 4,321–4,542), out of 31,646 people of all ages. About 26.0 in every 100,000 people younger than 20 were newly diagnosed that year, close to the national rate of 24.0. These 2024 figures and their confidence intervals are published in JAMA Network Open.

Published 2024 type 1 diabetes estimates for Tennessee with 95% confidence intervals
2024Tennessee95% CIUnited States
People living with T1D, all ages31,64630,587–32,7821,476,859
People living with T1D, younger than 204,4294,321–4,542196,778
New diagnoses per 100,000 people younger than 2026.023.4–28.624.0
Pediatric endocrinologists per 1,000 people younger than 18 with T1D10.710.4–11.010.1

Cite as: Wang F, Haynes A, Dabelea D, et al. Type 1 diabetes incidence and prevalence in the US. JAMA Netw Open. 2026;9(8):e2627732. doi:10.1001/jamanetworkopen.2026.27732. Download the table for every state (CSV).

Is type 1 diabetes increasing in Tennessee?

The number of people living with T1D in Tennessee went from 15,321 in 2000 to 32,417 in 2025, and is projected to rise to 43,522 by 2040 (+34%).

020K40K60K200020202040Projected →32.4K43.5K2000: 15,321 people living with T1D2001: 15,734 people living with T1D2002: 16,180 people living with T1D2003: 16,646 people living with T1D2004: 17,147 people living with T1D2005: 17,702 people living with T1D2006: 18,362 people living with T1D2007: 19,107 people living with T1D2008: 19,846 people living with T1D2009: 20,577 people living with T1D2010: 21,271 people living with T1D2011: 21,946 people living with T1D2012: 22,653 people living with T1D2013: 23,339 people living with T1D2014: 24,019 people living with T1D2015: 24,756 people living with T1D2016: 25,541 people living with T1D2017: 26,371 people living with T1D2018: 27,234 people living with T1D2019: 28,060 people living with T1D2020: 28,803 people living with T1D2021: 29,160 people living with T1D2022: 29,974 people living with T1D2023: 30,820 people living with T1D2024: 31,646 people living with T1D2025: 32,417 people living with T1D2026 (projected): 33,203 people living with T1D2027 (projected): 33,985 people living with T1D2028 (projected): 34,765 people living with T1D2029 (projected): 35,524 people living with T1D2030 (projected): 36,309 people living with T1D2031 (projected): 37,072 people living with T1D2032 (projected): 37,827 people living with T1D2033 (projected): 38,567 people living with T1D2034 (projected): 39,315 people living with T1D2035 (projected): 40,065 people living with T1D2036 (projected): 40,751 people living with T1D2037 (projected): 41,461 people living with T1D2038 (projected): 42,170 people living with T1D2039 (projected): 42,850 people living with T1D2040 (projected): 43,522 people living with T1D
People living with type 1 diabetes in Tennessee, 2000–2040. Solid line: modelled estimates to 2025; dashed line: projection to 2040.
Type 1 diabetes in Tennessee over time, all ages
YearLiving with T1DNew diagnosesDeathsMissing people
200015,3217253095,961
201021,2719222907,519
202028,8031,1274659,113
202532,4171,20537310,153
2030 (projected)36,3091,39452411,233
2040 (projected)43,5221,40961013,892

What is the life expectancy with type 1 diabetes in Tennessee?

A 10-year-old diagnosed with type 1 diabetes in Tennessee in 2025 is expected to live to 61.9, compared with 76.8 for a 10-year-old without T1D: 14.9 years of life lost. Counting years lived with complications as well, T1D costs 22.6 years of healthy life at today's level of care. If everyone received timely diagnosis, insulin and test strips, and insulin pumps and CGMs, that loss would fall to 15.7 years.

Healthy years of life for a 10-year-old diagnosed with T1D in Tennessee, as each level of care is added in turn
Level of careHealthy years restoredHealthy years of lifeHealthy years still lost
Current level of care–54.222.6
+ Timely diagnosis for everyone–54.222.6
+ Insulin and test strips for everyone+1.255.421.5
+ Insulin pumps and CGMs for everyone+5.861.215.7

How does Tennessee compare?

Type 1 diabetes in Tennessee compared with the United States and the world, 2025
2025TennesseeUnited StatesWorld
People living with T1D per 100,000443.3435.7115.5
New diagnoses per 100,00016.515.16.2
Missing people per 100 living with T1D31.325.143.0
Expected age at death, 10-year-old with T1D61.967.051.3
Expected age at death, 10-year-old in the general population76.880.177.0

Type 1 diabetes in other US states

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More data

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All figures are T1D Index version 3.0 estimates for all ages. Missing people are those who would be alive today had they not died early from type 1 diabetes. Expected age at death is for a 10-year-old. See Data & Methods for how the estimates are made and the peer-reviewed publications behind them.