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Biomedical subjects

G H Beaton

Publications and source records attributed to G H Beaton.

At least 73 records · Page 4Linked to original sources
PubMed1972

Vitamin C and the common cold: a double-blind trial.

A large scale double-blind trial was conducted to test the claim that the intake of one gram of vitamin C per day substantially reduces the frequency and duration of "colds". It was found that in terms of the average number of colds and days of sickness per subject the vitamin group experienced less illness than the placebo group, but the differences were smaller than have been claimed and were statistically not significant. However, there was a statistically significant difference (P <0.05) between the two groups in the number of subjects who remained free of illness throughout the study period. Furthermore the subjects receiving the vitamin experienced approximately 30% fewer total days of disability (confined to the house or off work) than those receiving the placebo, and this difference was statistically highly significant (P <0.001). The reduction in disability appeared to be due to a lower incidence of constitutional symptoms such as chills and severe malaise, and was seen in all types of acute illness, including those which did not involve the upper respiratory tract.

Adolescent↗
PubMed1971

Hemoglobin levels and iron intakes of infants attending selected child health centres in the city of Toronto.

An investigation of the hemoglobin levels of infants in potentially high-risk categories demonstrated the possibilities of a public health program of screening and referral for anemia. Blood samples for hemoglobin determinations and particulars of 24-hour dietary intakes were obtained for 252 infants between the ages of 6 and 18 months at seven child health centres in the City of Toronto. Twenty-nine percent of the infants had hemoglobin levels below 10 g./100 ml. of blood. Problems in the collection and analysis of dietary data limited the interpretation of iron intakes.

Age Factors↗
PubMed1966

Some physiological adjustments relating to nutrition in pregnancy.

Information from human and animal studies clearly indicates that a number of adjustments in protein, fat, iron and calcium metabolism occur during pregnancy. Recognition of these adjustments has led to a reappraisal of nutrient requirements during pregnancy. The existence of significant protein storage during pregnancy is called into question; in contrast, the evidence suggests that the major storage component is fat, perhaps in anticipation of the energy costs of lactation. In women who will not lactate, this storage is of no benefit and is an etiologic factor in obesity. From a consideration of iron metabolism in pregnancy, it is concluded that it is better to prevent iron depletion in non-pregnant women, especially that associated with excessive menstrual loss, than to administer iron therapy to pregnant women.

Animals↗
PubMedDate not supplied

Household food insecurity and hunger among families using food banks.

Over the past two decades, the demand for charitable food assistance has steadily grown, and a massive ad hoc system of food banks has become established in Canada. To assess the food insecurity and nutritional vulnerability of one subgroup of food bank users, interviews were conducted with a sample of 153 women in families using emergency food relief programs in Metropolitan Toronto. Ninety percent reported household incomes which were less than two thirds of the 'poverty line', and 94% reported some degree of food insecurity over the previous 12 months. Seventy percent reported some level of absolute food deprivation, despite using food banks. The findings highlight the limited capacity of ad hoc, charitable food assistance programs to respond to problems of household food insecurity which arise in the context of severe and chronic poverty.

Adult↗