Some carriers will insure beginning at age 18, and some require a minimum age of 21. There is also an upper age limit to apply for term life insurance, but this also varies carrier to carrier, but generally, the upper limit for new policies is between 60 and 80 years of age. For renewing an existing policies, typically between 85 and 95 is the upper limit. It's helpful to keep in mind that while you may still be eligible for life insurance regardless of your age, policies get more expensive as you age due to risk factors.
Because each situation is unique, we strongly recommend reaching out to Zander to learn more.
Here is the link to their website, and you can reach them at 800-356-4282 or info@zanderins.com.