Changes in sun-related attitudes and behaviours, and reduced sunburn prevalence in a population at high risk of melanoma

Knowledge of cancer risk reduction practices in rural towns of New South Wales

The Australian Cancer Society has published guidelines for recommended risk reduction strategies for breast, cervical, smoking-related and skin cancer. While knowledge may not be sufficient for change, it is argued to be necessary for change to occur. A measure of the level of health knowledge in the community can be useful for health promotion practitioners, identifying where health messages are not reaching their proposed targets. Our aims were to examine the level of knowledge about risk reduction practices for breast, cervical, smoking-related and skin cancers, for a rural New South Wales sample, and to examine sex and age effects on knowledge levels. A survey of 2846 women and 1732 men from rural New South Wales, which used an unprompted recall strategy, revealed some notable deficits in recall of cancer risk reduction practices: only 26 per cent of women identified mammograms as a risk reduction strategy for breast cancer; only 5 per cent of women knew at which ages mammograms should start and stop; only 6 per cent of women could identify when Pap tests should be discontinued; less than half of the sample could identify common solar protection strategies; and less than one-third of people identified passive smoking as a lung cancer risk.

Has mortality from melanoma stopped rising in Australia? Analysis of trends between 1931 and 1994

OBJECTIVE

To describe recent trends in mortality from melanoma in Australia.

DESIGN

An analysis of trends in age standardised and age and sex specific mortalities by year of death and median year of birth (cohort).

SETTING

Australia.

SUBJECTS

All deaths from melanoma registered in Australia between 1931 and 1994.

RESULTS

Melanoma mortality rose steadily from 1931 to 1985. From 1959 the annual rate of increase was 6.3% in men and 2.9% in women, resulting in mortalities of 4.82 and 2.51 per 100,000 person years in 1985 and 1989, respectively. Mortalities for both sexes seem to have plateaued from June 1985 onwards. In 1990-4 the rate rose by 3.7% in men to 5.00 per 100,000 and in women it fell by 5.2% to 2.38 per 100,000. The non-significant increase after 1985 in mortality in men was restricted to those aged over 70 years of age, whereas the fall in rates in women was mostly in those aged under 55 years. This pattern was generally reflected in the state trends, though with some variation: rates for women in Queensland had peaked in the late 1970s; while rates for men in New South Wales continued to rise in 1990-4, placing them above those for Queensland. Examination of mortalities specific for age, period, and cohort for Australia as a whole showed several salient features. Rates in men rose steeply in cohorts born before about 1930; were stable in cohorts born between 1930 and 1950; and fell in more recent cohorts. Rates in women showed similar changes but about five years earlier.

CONCLUSION

Melanoma mortality in Australia peaked in about 1985 and has now plateaued. On the basis of trends in cohorts it can be expected to fall in coming years.

Trends in photoprotection in American fashion magazines, 1983-1993. will fashion make you look old and ugly?

BACKGROUND

During the past 50 years recreational sun exposure has greatly increased in the United States.

OBJECTIVE

The purpose of this study was to examine the photoprotecion message of American fashion magazines and to identify recent trends.

METHODS

We evaluated models for tan, skin exposure, and other sun-related criteria in six leading fashion magazines between 1983 and 1993. We also recorded the number of sunscreen advertisements and sun awareness articles.

RESULTS

We evaluated 3031 models. Adult models had darker tans and greater skin exposure than adolescents and children. Men had darker tans than women. We noted trends toward lighter tans, more women wearing hats, more sunscreen advertisements, and sun awareness articles. Many sunscreen advertisements glorified tanning. Their models had darker tans and more skin exposure, and fewer wore a hat than did nonadvertisement models.

CONCLUSION

The fashion industry and especially sunsreen manufacturers promote excessive sun exposure. Although we found encouraging trends, gains were modest, especially in men's magazines.

Melanoma and Skin Cancer Control: An International Perspective

Approximately one million Americans are diagnosed with skin cancer each year. Since melanoma and skin cancer are amenable to prevention, education, and early detection, efforts to reduce the incidence of and death from melanoma have developed in many countries. Programs promoting behavioral changes and the incorporation of skin cancer control into national health care agendas have begun in a number of countries. Additional programs for the at-risk and general populations require further development and evaluation.

An overview of skin cancers. Incidence and causation

The incidence and mortality rates of skin cancer are rising in the United States and in many other countries. Concerns about stratospheric ozone depletion adding to the problem have made many organizations look at public and professional health programs as a possible solution. Early detection can reduce the problem in the short term, because mortality due to melanoma is clearly related to the depth of invasion of the tumor when it is removed. This is the factor which is amenable to change in an education program on early detection. Exposure to sunlight is clearly related to risk of development of skin cancer, including both melanoma and nonmelanoma skin cancers. This is the component of the equation of constitutional predisposition plus exposure to environmental risk factors leading to skin cancer that is amenable to change as a result of educational programs. On the basis of available data, there is a case for further development, provision, and evaluation of public and professional education programs designed to control what is becoming a major public health problem in the community.

Melanoma: prevention and early diagnosis

Over the past two decades there has been a rapid rise in the numbers of people developing and dying from malignant melanoma. Sunlight is the main aetiological factor linked with melanoma. Exposure to the sun is a risk factor that can be modified provided that people are aware of the dangers. Health promotion campaigns can play a part in producing such change. General practitioners and practice nurses have an important part to play in providing those most at risk with information and advice about sensible sun exposure and sun protection measures. Campaigns to reduce delay in diagnosis by a combination of professional and public education have been reported from several centres around the world. The effects of these campaigns in reducing the depth distribution of cutaneous malignant melanoma have sometimes been encouraging, but in other instances have shown little effect. Until there is clear evidence that early detection reduces mortality from melanoma, the opportunistic promotion of early detection may not be cost effective and will fail to reach all sections of the community at risk. At the present time, therefore, the emphasis should be on the primary prevention of skin cancer.