A Study of LY2881835 in Healthy People and People With Diabetes

Inclusion Criteria: All subjects: * Are a healthy male or a healthy female who cannot become pregnant, or are patients with Type 2 Diabetes Mellitus (T2DM) who are not taking any drugs to lower blood sugar except metformin * Have a body mass index (BMI) of at least 18.5 kilograms per meter squared (kg/m²) at screening * Have blood pressure, pulse rate and clinical laboratory tests within the normal range for the population or investigator site, or with abnormalities deemed clinical insignificant by the investigator * Have veins that are suitable for easy blood collection * Are reliable and willing to be available for the whole study and are willing to follow study procedures * Must have given written informed consent Subjects with Type 2 Diabetes Mellitus (T2DM) only: * Do not have any change to their diabetes treatment for at least 4 weeks prior to screening * Have a glycosylated hemoglobin (HbA1c) level greater than or equal to 6% and less than or equal to 11% at screening Exclusion Criteria: All subjects: * Are currently participating in or were in another new drug or medical research study in the last 30 days * Have participated in this study before * Have known allergies to compounds related to the study drug * Currently have or used to have health problems or laboratory test results that in the opinion of the doctor, could interfere with understanding the results of this study * Intend to use over-the-counter or prescription medications within 14 days prior to dosing or during the study. Hormone replacement therapy and intermittent use of paracetamol during the study is acceptable. For patients with Type 2 Diabetes Mellitus, medicines for control of high fats (For example, cholesterol), high blood pressure, are allowed. * Have electrocardiogram (ECG) readings that are not suitable for the study * Are unwilling to follow dietary restrictions/requirements for the study including 1) refrain from consuming foods or beverages containing grapefruit pomelo, star fruit, or Seville orange within 14 days of the start of the study drug dosing until collection of the last blood sample for drug assay and 2) consume only the meals provided during inpatient stays at the clinical research unit * Have a history of drug or alcohol abuse * Are infected with hepatitis B * Are infected with human immunodeficiency disease virus (HIV) * Have donated 450 milliliters (mL) or more of blood in the last 3 months or provided any blood donation within the last month from screening * Have a regular alcohol intake greater than 21 units per week (males) and 14 units per week (females) or are not willing to abstain from alcohol while in the research unit * Smoke more than 10 cigarettes per day or are not willing to abstain from smoking while at the clinic * The study doctor thinks the subject should not participate for any other reasons Subjects with Type 2 Diabetes Mellitus (T2DM) only: * Have health complications due to poorly controlled diabetes as shown by blood and urine laboratory test results or based on physical examination and medical assessment, as determined by the study doctor * Were hospitalised for poor control of their diabetes (ketoacidotic episode) in the last 6 months * Currently using or have used insulin in the last 1 year to control their diabetes