Introduction: The term "spam" is applied to unwanted commercial e-mails sent to all whose e-mail addresses have been acquired by the spammers. The number of undesirable e-mails is growing in the health-care related areas as well. The targets of health-care related spams are laymen, physicians and academic researchers alike. Method: On the basis of 12,986 unwanted letters received in one year, the authors concluded that percentage of health-related spam is the second most common spam (27%) in relation to all spam. Most of the spam (63%) aggressively promoted purchasing of various consumer goods, but health-related spam are far ahead of the rest. The collected data were grouped by year and topic and they are analyzed by simple descriptive statistics. Spam form of cyber attacks on health care issues were divided into two: spam what is jeopardized individuals' health (e.g. medical compounds without any curing effect, misleading statement on medical device, fraudulent panacea offers, and cheating cure methods, etc.) and onslaught on medical scientific activity (pseudo-scientific congress invitation, predator journal invitation etc.). Results: The topics of spams addressed to laymen are offered for perfect healing by strange treatments, cures (31%), panaceas (19%), lifestyle advice (19%), massage (16%), brand new health-care devices (4%) and drugs for sexual dysfunction (11%). The topics of spams addressed to physicians and researchers are deluged by pseudoscientific materials: invitation for articles to be sent to no-name/fake open-access journals (68%), invitation to participate at an obscure congress (27%) or newsletters on miscellanous medical topics (5%). Conclusion: The spams offer very often relief or solution to medical problems that the present-day medical practice cannot solve perfectly (oncological, musculo-sceletal, endocrin or metabolic problems). Understandably, the patients would hold on to fake hopes - and the authentic patient education and health promotion will be neglected. These unwanted messages practically cannot be unsubscribed, and - while the spam filters are far from perfection - the victim must go through the filtered spam-dustbin in order not to miss some real messages. Unfortunately no legal regulation (neither local, nor GDPR) can block or stop the spams. The spams are misleading the laymen and jeopardise the effects of professional and responsible health promotion and health education. Orv Hetil. 2019; 160(43): 1706-1710.