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Cover - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 04, 2022
Jun. 30, 2021
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Current Fiscal Year End Date --12-31    
Entity File Number 001-39785    
Entity Registrant Name LIFEMD, INC.    
Entity Central Index Key 0000948320    
Entity Tax Identification Number 76-0238453    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 236 Fifth Avenue    
Entity Address, Address Line Two Suite 400    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10001    
City Area Code (866)    
Local Phone Number 351-5907    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 235,609,412
Entity Common Stock, Shares Outstanding   30,833,326  
Documents Incorporated By Reference Portions of the 2022 definitive proxy statement for the Registrant’s Annual Meeting of Shareholders, to be filed within 120 days of our fiscal year end (December 31, 2021) are incorporated by reference into Part III of this Form 10-K    
ICFR Auditor Attestation Flag false    
Auditor Firm ID 711    
Auditor Name Friedman LLP    
Auditor Location Marlton, New Jersey    
Common Stock, par value $.01 per share [Member]      
Title of 12(b) Security Common Stock, par value $.01 per share    
Trading Symbol LFMD    
Security Exchange Name NASDAQ    
Series A Cumulative Perpetual Preferred Stock, par value $0.0001 per share [Member]      
Title of 12(b) Security Series A Cumulative Perpetual Preferred Stock, par value $0.0001 per share    
Trading Symbol LFMDP    
Security Exchange Name NASDAQ